#859BBD
Closest named color: Cool Gray (#8D99AE). oklch(68.5% 0.056 259), rgb(133, 155, 189).
Aa
Black text reads best on this color (7.42:1).
About this color
#859BBD is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.056 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.023 away. Black text reads best on it, at 7.42:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.42:1 |
| White text | 2.82:1 |
Values
| HEX | #859BBD |
| RGB | rgb(133, 155, 189) |
| HSL | hsl(216, 30%, 63%) |
| OKLCH | oklch(68.5% 0.056 259) |
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 #859BBD | 2.82:1 | Fails | Lc -59.6 | Large or bold text, headings |
| Black text on #859BBD | 7.42:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #859BBD text on white | 2.82:1 | Fails | Lc 54.3 | Large or bold text, headings |
| #859BBD text on black | 7.42:1 | AAA | Lc -47.5 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2DAE6
oklch(88.6% 0.019 258.4)
-
Step 300
300
#B3C2D8
oklch(81% 0.035 257.9)
-
Step 400
400 (this color)
#859BBD
oklch(68.5% 0.056 259)
-
Step 500
500
#6F8BB5
oklch(63.1% 0.071 258.3)
-
Step 600
600
#5774A1
oklch(55.5% 0.078 259)
-
Step 700
700
#47618A
oklch(49% 0.073 259.3)
-
Step 800
800
#3B5070
oklch(42.8% 0.06 258.6)
-
Step 900
900
#32425B
oklch(37.7% 0.048 259.1)
-
Step 950
950
#1E2735
oklch(27.1% 0.029 259.1)
#859BBD 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) | #8F9DBF | 0.015 |
| Deuteranopia (no green cones) | #8A97BC | 0.012 |
| Tritanopia (no blue cones) | #75A2A6 | 0.050 |
| Achromatopsia (no color) | #9A9A9A | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859BBD
#859BBD
oklch(68.5% 0.056 259)
- #AD9672
#AD9672
oklch(68.5% 0.057 78.7)
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 #859BBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.023
- Bluey Grey #89A0B0 ΔE 0.028
- Greyblue #77A1B5 ΔE 0.029
- Bluegrey #85A3B2 ΔE 0.032
- Cool Steel #97A7B3 ΔE 0.049
- Silver Lake Blue #778DA9 ΔE 0.049
- Cool Grey #95A3A6 ΔE 0.051
- Blue Grey #758DA3 ΔE 0.055
Use #859BBD 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.