#859ECB
Closest named color: Greyblue (#77A1B5). oklch(69.7% 0.072 262), rgb(133, 158, 203).
Aa
Black text reads best on this color (7.75:1).
About this color
#859ECB is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.072 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.041 away. Black text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.75:1 |
| White text | 2.70:1 |
Values
| HEX | #859ECB |
| RGB | rgb(133, 158, 203) |
| HSL | hsl(219, 40%, 66%) |
| OKLCH | oklch(69.7% 0.072 262) |
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 #859ECB | 2.70:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #859ECB | 7.75:1 | AAA | Lc 51.5 | Large or bold text, headings |
| #859ECB text on white | 2.70:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #859ECB text on black | 7.75:1 | AAA | Lc -49.4 | 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
#D0DAEA
oklch(88.6% 0.025 259.8)
-
Step 300
300
#B1C1DF
oklch(80.9% 0.046 263)
-
Step 400
400 (this color)
#859ECB
oklch(69.7% 0.072 262)
-
Step 500
500
#6B89C2
oklch(63.1% 0.093 262.7)
-
Step 600
600
#5273AE
oklch(55.7% 0.1 261.4)
-
Step 700
700
#436096
oklch(49.2% 0.094 262)
-
Step 800
800
#374E79
oklch(42.6% 0.077 262.2)
-
Step 900
900
#304162
oklch(37.6% 0.061 262.9)
-
Step 950
950
#1C2639
oklch(26.9% 0.038 262.7)
#859ECB 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) | #8FA1CD | 0.016 |
| Deuteranopia (no green cones) | #889ACA | 0.011 |
| Tritanopia (no blue cones) | #70A7AD | 0.064 |
| Achromatopsia (no color) | #9D9D9D | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859ECB
#859ECB
oklch(69.7% 0.072 262)
- #B49969
#B49969
oklch(69.6% 0.072 81.4)
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 #859ECB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.041
- Cool Gray #8D99AE ΔE 0.042
- Bluey Grey #89A0B0 ΔE 0.043
- Bluegrey #85A3B2 ΔE 0.044
- Cool Steel #97A7B3 ΔE 0.055
- Cool Grey #95A3A6 ΔE 0.064
- Silver Lake Blue #778DA9 ΔE 0.065
- Faded Blue #658CBB ΔE 0.068
Use #859ECB 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.