#687BFB
Closest named color: Cornflower (#6A79F7). oklch(63.4% 0.19 273.4), rgb(104, 123, 251).
Aa
Black text reads best on this color (5.81:1).
About this color
#687BFB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.190 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.007 away. Black text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.81:1 |
| White text | 3.61:1 |
Values
| HEX | #687BFB |
| RGB | rgb(104, 123, 251) |
| HSL | hsl(232, 95%, 70%) |
| OKLCH | oklch(63.4% 0.19 273.4) |
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 #687BFB | 3.61:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #687BFB | 5.81:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #687BFB text on white | 3.61:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #687BFB text on black | 5.81:1 | AA | Lc -38.3 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED8FC
oklch(88.6% 0.051 273.1)
-
Step 300
300
#ADBDFD
oklch(80.9% 0.092 273.3)
-
Step 400
400
#8398FC
oklch(70.7% 0.148 273.1)
-
Step 500
500 (this color)
#687BFB
oklch(63.4% 0.19 273.4)
-
Step 600
600
#525FE9
oklch(55.6% 0.206 273.5)
-
Step 700
700
#434DCB
oklch(49.1% 0.192 273.4)
-
Step 800
800
#3740A4
oklch(42.7% 0.159 273.6)
-
Step 900
900
#2E3882
oklch(37.7% 0.124 273.1)
-
Step 950
950
#1B214C
oklch(26.9% 0.079 273.9)
#687BFB 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) | #328DFF | 0.059 |
| Deuteranopia (no green cones) | #0581F8 | 0.066 |
| Tritanopia (no blue cones) | #0098AF | 0.166 |
| Achromatopsia (no color) | #878787 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #687BFB
#687BFB
oklch(63.4% 0.19 273.4)
- #A58700
#A58700
oklch(63.3% 0.13 93.1)
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 #687BFB, closest first.
No curated palette has a color within ΔE 0.04 of #687BFB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.007
- Soft Blue #6488EA ΔE 0.044
- Medium Slate Blue #7B68EE ΔE 0.050
- Periwinkle #8E82FE ΔE 0.057
- Clear Blue #247AFD ΔE 0.060
- Lavender Blue #8B88F8 ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.069
- Dark Sky Blue #448EE4 ΔE 0.070
Use #687BFB 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.