#859BB5
Closest named color: Cool Gray (#8D99AE). oklch(68.1% 0.046 252.8), rgb(133, 155, 181).
Aa
Black text reads best on this color (7.35:1).
About this color
#859BB5 is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.046 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.013 away. Black text reads best on it, at 7.35:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.35:1 |
| White text | 2.85:1 |
Values
| HEX | #859BB5 |
| RGB | rgb(133, 155, 181) |
| HSL | hsl(213, 24%, 62%) |
| OKLCH | oklch(68.1% 0.046 252.8) |
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 #859BB5 | 2.85:1 | Fails | Lc -60.0 | Large or bold text, headings |
| Black text on #859BB5 | 7.35:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #859BB5 text on white | 2.85:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #859BB5 text on black | 7.35:1 | AAA | Lc -47.1 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B4C2D3
oklch(80.9% 0.029 253.3)
-
Step 400
400 (this color)
#859BB5
oklch(68.1% 0.046 252.8)
-
Step 500
500
#708CAD
oklch(63.1% 0.059 252.9)
-
Step 600
600
#587698
oklch(55.6% 0.064 252.1)
-
Step 700
700
#486382
oklch(49.1% 0.06 252.4)
-
Step 800
800
#3B516A
oklch(42.8% 0.05 252.1)
-
Step 900
900
#334356
oklch(37.7% 0.039 253.1)
-
Step 950
950
#1E2732
oklch(26.9% 0.024 253.7)
#859BB5 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) | #929CB6 | 0.018 |
| Deuteranopia (no green cones) | #8C97B4 | 0.013 |
| Tritanopia (no blue cones) | #78A1A3 | 0.040 |
| Achromatopsia (no color) | #999999 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859BB5
#859BB5
oklch(68.1% 0.046 252.8)
- #AB957A
#AB957A
oklch(68.2% 0.046 72.6)
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 #859BB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.013
- Bluey Grey #89A0B0 ΔE 0.019
- Greyblue #77A1B5 ΔE 0.023
- Bluegrey #85A3B2 ΔE 0.025
- Cool Grey #95A3A6 ΔE 0.042
- Cool Steel #97A7B3 ΔE 0.044
- Silver Lake Blue #778DA9 ΔE 0.045
- Blue Grey #758DA3 ΔE 0.049
Use #859BB5 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.