#6C91EE
Closest named color: Cornflower Blue (#6495ED). oklch(67.1% 0.144 266.2), rgb(108, 145, 238).
Aa
Black text reads best on this color (6.92:1).
About this color
#6C91EE is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.144 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.013 away. Black text reads best on it, at 6.92:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.92:1 |
| White text | 3.03:1 |
Values
| HEX | #6C91EE |
| RGB | rgb(108, 145, 238) |
| HSL | hsl(223, 79%, 68%) |
| OKLCH | oklch(67.1% 0.144 266.2) |
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 #6C91EE | 3.03:1 | AA large text | Lc -62.3 | Content text, not long reading |
| Black text on #6C91EE | 6.92:1 | AA | Lc 47.1 | Large or bold text, headings |
| #6C91EE text on white | 3.03:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #6C91EE text on black | 6.92:1 | AA | Lc -44.8 | 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
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A6C0FC
oklch(81% 0.09 266.3)
-
Step 400
400 (this color)
#6C91EE
oklch(67.1% 0.144 266.2)
-
Step 500
500
#5580F8
oklch(63.1% 0.185 266.3)
-
Step 600
600
#3C66E6
oklch(55.6% 0.2 266.2)
-
Step 700
700
#2F54C8
oklch(49.1% 0.185 266.1)
-
Step 800
800
#2745A2
oklch(42.6% 0.155 266.3)
-
Step 900
900
#233C80
oklch(37.7% 0.119 265.7)
-
Step 950
950
#15234B
oklch(26.9% 0.076 266.7)
#6C91EE 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) | #6B9AF2 | 0.023 |
| Deuteranopia (no green cones) | #5B8FEC | 0.020 |
| Tritanopia (no blue cones) | #1FA5B4 | 0.129 |
| Achromatopsia (no color) | #949494 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C91EE
#6C91EE
oklch(67.1% 0.144 266.2)
- #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 #6C91EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.013
- Soft Blue #6488EA ΔE 0.026
- Chefchaouen Blue #4895EF ΔE 0.034
- Dark Sky Blue #448EE4 ΔE 0.044
- Perrywinkle #8F8CE7 ΔE 0.045
- Lavender Blue #8B88F8 ΔE 0.047
- Periwinkle Blue #8F99FB ΔE 0.054
- Periwinkle #8E82FE ΔE 0.062
Use #6C91EE 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.