#91ABBB
Closest named color: Cool Steel (#97A7B3). oklch(72.7% 0.037 235), rgb(145, 171, 187).
Aa
Black text reads best on this color (8.74:1).
About this color
#91ABBB is a medium-light, muted blue. In OKLCH its lightness is 73%, its chroma 0.037 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.014 away. Black text reads best on it, at 8.74:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.74:1 |
| White text | 2.40:1 |
Values
| HEX | #91ABBB |
| RGB | rgb(145, 171, 187) |
| HSL | hsl(203, 24%, 65%) |
| OKLCH | oklch(72.7% 0.037 235) |
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 #91ABBB | 2.40:1 | Fails | Lc -52.3 | Large or bold text, headings |
| Black text on #91ABBB | 8.74:1 | AAA | Lc 56.7 | Large or bold text, headings |
| #91ABBB text on white | 2.40:1 | Fails | Lc 47.3 | Large or bold text, headings |
| #91ABBB text on black | 8.74:1 | AAA | Lc -54.7 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B3C3CE
oklch(80.8% 0.023 237.7)
-
Step 400
400 (this color)
#91ABBB
oklch(72.7% 0.037 235)
-
Step 500
500
#6E8FA2
oklch(63.2% 0.047 233.7)
-
Step 600
600
#55798D
oklch(55.7% 0.051 233.2)
-
Step 700
700
#466578
oklch(49% 0.047 235.9)
-
Step 800
800
#395362
oklch(42.8% 0.04 234.3)
-
Step 900
900
#324450
oklch(37.6% 0.031 237.8)
-
Step 950
950
#1D282F
oklch(27% 0.02 236.4)
#91ABBB 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) | #A4AABC | 0.025 |
| Deuteranopia (no green cones) | #9EA5BB | 0.022 |
| Tritanopia (no blue cones) | #85AFB0 | 0.027 |
| Achromatopsia (no color) | #A7A7A7 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91ABBB
#91ABBB
oklch(72.7% 0.037 235)
- #BAA191
#BAA191
oklch(72.7% 0.037 54.6)
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 #91ABBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.014
- Bluegrey #85A3B2 ΔE 0.029
- Cool Grey #95A3A6 ΔE 0.031
- Bluey Grey #89A0B0 ΔE 0.034
- Pewter #96A8A1 ΔE 0.036
- Dark Gray #A9A9A9 ΔE 0.038
- Greyblue #77A1B5 ΔE 0.045
- French Gray #ADB5BD ΔE 0.048
Use #91ABBB 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.