#6C91EF
Closest named color: Cornflower Blue (#6495ED). oklch(67.2% 0.146 266.3), rgb(108, 145, 239).
Aa
Black text reads best on this color (6.93:1).
About this color
#6C91EF is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.146 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.014 away. Black text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #6C91EF |
| RGB | rgb(108, 145, 239) |
| HSL | hsl(223, 80%, 68%) |
| OKLCH | oklch(67.2% 0.146 266.3) |
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 #6C91EF | 3.02:1 | AA large text | Lc -62.2 | Content text, not long reading |
| Black text on #6C91EF | 6.93:1 | AA | Lc 47.2 | Large or bold text, headings |
| #6C91EF text on white | 3.02:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #6C91EF text on black | 6.93:1 | AA | Lc -44.9 | 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 400.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FC
oklch(88.5% 0.051 267)
-
Step 300
300
#A5C0FC
oklch(80.9% 0.09 265.7)
-
Step 400
400 (this color)
#6C91EF
oklch(67.2% 0.146 266.3)
-
Step 500
500
#5580F9
oklch(63.2% 0.187 266.4)
-
Step 600
600
#3C66E8
oklch(55.7% 0.202 266.2)
-
Step 700
700
#2F53C9
oklch(49% 0.188 266.4)
-
Step 800
800
#2745A3
oklch(42.7% 0.156 266.3)
-
Step 900
900
#233B81
oklch(37.6% 0.122 266.3)
-
Step 950
950
#15234C
oklch(27% 0.078 266.9)
#6C91EF 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) | #6A9AF3 | 0.023 |
| Deuteranopia (no green cones) | #5A8FED | 0.021 |
| Tritanopia (no blue cones) | #1DA6B4 | 0.132 |
| Achromatopsia (no color) | #949494 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C91EF
#6C91EF
oklch(67.2% 0.146 266.3)
- #BB8E00
#BB8E00
oklch(67.1% 0.137 86)
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 #6C91EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.014
- Soft Blue #6488EA ΔE 0.027
- Chefchaouen Blue #4895EF ΔE 0.034
- Dark Sky Blue #448EE4 ΔE 0.045
- Perrywinkle #8F8CE7 ΔE 0.045
- Lavender Blue #8B88F8 ΔE 0.047
- Periwinkle Blue #8F99FB ΔE 0.053
- Periwinkle #8E82FE ΔE 0.061
Use #6C91EF 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.