#7B81FF
Closest named color: Periwinkle (#8E82FE). oklch(66% 0.183 278.1), rgb(123, 129, 255).
Aa
Black text reads best on this color (6.42:1).
About this color
#7B81FF is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.183 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle (#8E82FE), ΔE 0.027 away. Black text reads best on it, at 6.42:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Periwinkle (#8E82FE) |
| Black text | 6.42:1 |
| White text | 3.26:1 |
Values
| HEX | #7B81FF |
| RGB | rgb(123, 129, 255) |
| HSL | hsl(237, 100%, 74%) |
| OKLCH | oklch(66% 0.183 278.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #7B81FF | 3.26:1 | AA large text | Lc -65.2 | Content text, not long reading |
| Black text on #7B81FF | 6.42:1 | AA | Lc 44.3 | Non-text elements, placeholder text |
| #7B81FF text on white | 3.26:1 | AA large text | Lc 59.7 | Large or bold text, headings |
| #7B81FF text on black | 6.42:1 | AA | Lc -42.0 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D1D7FB
oklch(88.6% 0.05 277.9)
-
Step 300
300
#B3BBFA
oklch(80.8% 0.089 278.6)
-
Step 400
400
#8D96F8
oklch(70.8% 0.143 278.1)
-
Step 500
500 (this color)
#7B81FF
oklch(66% 0.183 278.1)
-
Step 600
600
#5E5DE4
oklch(55.7% 0.199 278.1)
-
Step 700
700
#4E4BC6
oklch(49.1% 0.186 278.1)
-
Step 800
800
#3F3FA0
oklch(42.7% 0.153 277.7)
-
Step 900
900
#35377F
oklch(37.8% 0.119 277.8)
-
Step 950
950
#1F214A
oklch(27.1% 0.075 278.1)
#7B81FF with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4394FF | 0.068 |
| Deuteranopia (no green cones) | #3489FC | 0.070 |
| Tritanopia (no blue cones) | #419DB4 | 0.161 |
| Achromatopsia (no color) | #8E8E8E | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #7B81FF
#7B81FF
oklch(66% 0.183 278.1)
- #A99200
#A99200
oklch(66.1% 0.137 97.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #7B81FF, closest first.
No curated palette has a color within ΔE 0.04 of #7B81FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle #8E82FE ΔE 0.027
- Lavender Blue #8B88F8 ΔE 0.032
- Cornflower #6A79F7 ΔE 0.033
- Soft Blue #6488EA ΔE 0.047
- Perrywinkle #8F8CE7 ΔE 0.057
- Medium Slate Blue #7B68EE ΔE 0.061
- Cornflower Blue #6495ED ΔE 0.065
- Medium Purple #9370DB ΔE 0.069
Use #7B81FF in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.