#91A5CF
Closest named color: Cool Steel (#97A7B3). oklch(72.2% 0.065 264.9), rgb(145, 165, 207).
Aa
Black text reads best on this color (8.48:1).
About this color
#91A5CF is a medium-light, muted blue. In OKLCH its lightness is 72%, its chroma 0.065 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.044 away. Black text reads best on it, at 8.48:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.48:1 |
| White text | 2.47:1 |
Values
| HEX | #91A5CF |
| RGB | rgb(145, 165, 207) |
| HSL | hsl(221, 39%, 69%) |
| OKLCH | oklch(72.2% 0.065 264.9) |
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 #91A5CF | 2.47:1 | Fails | Lc -53.7 | Large or bold text, headings |
| Black text on #91A5CF | 8.48:1 | AAA | Lc 55.4 | Large or bold text, headings |
| #91A5CF text on white | 2.47:1 | Fails | Lc 48.6 | Large or bold text, headings |
| #91A5CF text on black | 8.48:1 | AAA | Lc -53.4 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E9
oklch(88.5% 0.023 266.9)
-
Step 300
300
#B4C1DC
oklch(81% 0.041 265)
-
Step 400
400 (this color)
#91A5CF
oklch(72.2% 0.065 264.9)
-
Step 500
500
#7189BD
oklch(63.2% 0.084 265)
-
Step 600
600
#5972A9
oklch(55.6% 0.091 264.9)
-
Step 700
700
#495F91
oklch(49% 0.085 265.3)
-
Step 800
800
#3C4E76
oklch(42.7% 0.071 265.1)
-
Step 900
900
#33415F
oklch(37.7% 0.055 264.7)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#91A5CF 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) | #97A8D1 | 0.012 |
| Deuteranopia (no green cones) | #92A2CE | 0.008 |
| Tritanopia (no blue cones) | #80ADB3 | 0.058 |
| Achromatopsia (no color) | #A5A5A5 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91A5CF
#91A5CF
oklch(72.2% 0.065 264.9)
- #B8A276
#B8A276
oklch(72.1% 0.065 84.3)
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 #91A5CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.044
- Bluegrey #85A3B2 ΔE 0.047
- Bluey Grey #89A0B0 ΔE 0.047
- Cool Gray #8D99AE ΔE 0.052
- Greyblue #77A1B5 ΔE 0.053
- Cool Grey #95A3A6 ΔE 0.059
- Light Grey Blue #9DBCD4 ΔE 0.065
- Dark Gray #A9A9A9 ΔE 0.067
Use #91A5CF 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.