#91A4B0
Closest named color: Cool Steel (#97A7B3). oklch(70.8% 0.028 235.5), rgb(145, 164, 176).
Aa
Black text reads best on this color (8.14:1).
About this color
#91A4B0 is a medium-light close to neutral grey. In OKLCH its lightness is 71%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Cool Steel (#97A7B3), ΔE 0.012 away. Black text reads best on it, at 8.14:1.
| Hue family | Neutrals |
| Lightness | medium-light (71%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.14:1 |
| White text | 2.57:1 |
Values
| HEX | #91A4B0 |
| RGB | rgb(145, 164, 176) |
| HSL | hsl(203, 16%, 63%) |
| OKLCH | oklch(70.8% 0.028 235.5) |
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 #91A4B0 | 2.57:1 | Fails | Lc -55.6 | Large or bold text, headings |
| Black text on #91A4B0 | 8.14:1 | AAA | Lc 53.6 | Large or bold text, headings |
| #91A4B0 text on white | 2.57:1 | Fails | Lc 50.4 | Large or bold text, headings |
| #91A4B0 text on black | 8.14:1 | AAA | Lc -51.5 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B6C3CA
oklch(80.9% 0.017 231)
-
Step 400
400 (this color)
#91A4B0
oklch(70.8% 0.028 235.5)
-
Step 500
500
#758D9C
oklch(63% 0.036 235.6)
-
Step 600
600
#5E7787
oklch(55.5% 0.038 236.5)
-
Step 700
700
#4D6472
oklch(49% 0.036 235.2)
-
Step 800
800
#3F525D
oklch(42.7% 0.03 233.8)
-
Step 900
900
#36444C
oklch(37.8% 0.023 233.2)
-
Step 950
950
#20282D
oklch(27.1% 0.015 235.5)
#91A4B0 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) | #9FA3B1 | 0.019 |
| Deuteranopia (no green cones) | #9AA0B0 | 0.016 |
| Tritanopia (no blue cones) | #89A7A8 | 0.020 |
| Achromatopsia (no color) | #A1A1A1 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91A4B0
#91A4B0
oklch(70.8% 0.028 235.5)
- #AF9D91
#AF9D91
oklch(70.8% 0.027 55.9)
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 #91A4B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.012
- Cool Grey #95A3A6 ΔE 0.014
- Bluegrey #85A3B2 ΔE 0.016
- Bluey Grey #89A0B0 ΔE 0.016
- Pewter #96A8A1 ΔE 0.028
- Cool Gray #8D99AE ΔE 0.031
- Greyblue #77A1B5 ΔE 0.035
- Dark Gray #A9A9A9 ΔE 0.039
Use #91A4B0 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.