#859CCB
Closest named color: Cool Gray (#8D99AE). oklch(69.3% 0.074 264.3), rgb(133, 156, 203).
Aa
Black text reads best on this color (7.61:1).
About this color
#859CCB is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.074 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.042 away. Black text reads best on it, at 7.61:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.61:1 |
| White text | 2.75:1 |
Values
| HEX | #859CCB |
| RGB | rgb(133, 156, 203) |
| HSL | hsl(220, 40%, 66%) |
| OKLCH | oklch(69.3% 0.074 264.3) |
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 #859CCB | 2.75:1 | Fails | Lc -58.5 | Large or bold text, headings |
| Black text on #859CCB | 7.61:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #859CCB text on white | 2.75:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #859CCB text on black | 7.61:1 | AAA | Lc -48.6 | Large or bold text, headings |
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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EB
oklch(88.5% 0.026 266.6)
-
Step 300
300
#B2C1DF
oklch(80.9% 0.046 264.3)
-
Step 400
400 (this color)
#859CCB
oklch(69.3% 0.074 264.3)
-
Step 500
500
#6C88C3
oklch(63% 0.095 264.4)
-
Step 600
600
#5472B0
oklch(55.7% 0.103 263.8)
-
Step 700
700
#455F97
oklch(49.1% 0.096 264.3)
-
Step 800
800
#394E7B
oklch(42.8% 0.08 264.3)
-
Step 900
900
#314163
oklch(37.8% 0.062 264.4)
-
Step 950
950
#1D263A
oklch(27% 0.04 265.3)
#859CCB 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) | #8C9FCD | 0.013 |
| Deuteranopia (no green cones) | #8599CA | 0.008 |
| Tritanopia (no blue cones) | #70A6AC | 0.067 |
| Achromatopsia (no color) | #9C9C9C | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859CCB
#859CCB
oklch(69.3% 0.074 264.3)
- #B29966
#B29966
oklch(69.3% 0.074 84.5)
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 #859CCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.042
- Greyblue #77A1B5 ΔE 0.044
- Bluey Grey #89A0B0 ΔE 0.045
- Bluegrey #85A3B2 ΔE 0.048
- Cool Steel #97A7B3 ΔE 0.059
- Silver Lake Blue #778DA9 ΔE 0.062
- Faded Blue #658CBB ΔE 0.065
- Cool Grey #95A3A6 ΔE 0.067
Use #859CCB 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.