#667FEB
Closest named color: Soft Blue (#6488EA). oklch(63% 0.164 271.2), rgb(102, 127, 235).
Aa
Black text reads best on this color (5.80:1).
About this color
#667FEB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.164 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.023 away. Black text reads best on it, at 5.80:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.80:1 |
| White text | 3.62:1 |
Values
| HEX | #667FEB |
| RGB | rgb(102, 127, 235) |
| HSL | hsl(229, 77%, 66%) |
| OKLCH | oklch(63% 0.164 271.2) |
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 #667FEB | 3.62:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #667FEB | 5.80:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #667FEB text on white | 3.62:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #667FEB text on black | 5.80:1 | AA | Lc -38.1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300
#ADBEF5
oklch(80.8% 0.08 271.2)
-
Step 400
400
#849BF1
oklch(70.8% 0.129 271.4)
-
Step 500
500 (this color)
#667FEB
oklch(63% 0.164 271.2)
-
Step 600
600
#5066DA
oklch(55.7% 0.178 271.4)
-
Step 700
700
#4154BD
oklch(49.1% 0.166 271.3)
-
Step 800
800
#354599
oklch(42.6% 0.138 271.2)
-
Step 900
900
#2E3B7A
oklch(37.7% 0.108 271.6)
-
Step 950
950
#1B2347
oklch(27% 0.068 271.8)
#667FEB 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) | #4D8DEF | 0.040 |
| Deuteranopia (no green cones) | #3A81E9 | 0.043 |
| Tritanopia (no blue cones) | #0797AA | 0.146 |
| Achromatopsia (no color) | #868686 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #667FEB
#667FEB
oklch(63% 0.164 271.2)
- #A68500
#A68500
oklch(63% 0.129 91.2)
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 #667FEB, closest first.
No curated palette has a color within ΔE 0.04 of #667FEB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.023
- Cornflower #6A79F7 ΔE 0.025
- Dark Sky Blue #448EE4 ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.057
- Chefchaouen Blue #4895EF ΔE 0.059
- Medium Slate Blue #7B68EE ΔE 0.059
- Lavender Blue #8B88F8 ΔE 0.059
- Periwinkle #8E82FE ΔE 0.063
Use #667FEB 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.