#91AFD0
Closest named color: Light Grey Blue (#9DBCD4). oklch(74.3% 0.058 251), rgb(145, 175, 208).
Aa
Black text reads best on this color (9.24:1).
About this color
#91AFD0 is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.058 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.040 away. Black text reads best on it, at 9.24:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.24:1 |
| White text | 2.27:1 |
Values
| HEX | #91AFD0 |
| RGB | rgb(145, 175, 208) |
| HSL | hsl(211, 40%, 69%) |
| OKLCH | oklch(74.3% 0.058 251) |
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 #91AFD0 | 2.27:1 | Fails | Lc -49.6 | Large or bold text, headings |
| Black text on #91AFD0 | 9.24:1 | AAA | Lc 59.2 | Large or bold text, headings |
| #91AFD0 text on white | 2.27:1 | Fails | Lc 44.8 | Non-text elements, placeholder text |
| #91AFD0 text on black | 9.24:1 | AAA | Lc -57.4 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B0C3D8
oklch(80.9% 0.036 250.9)
-
Step 400
400 (this color)
#91AFD0
oklch(74.3% 0.058 251)
-
Step 500
500
#678DB5
oklch(63.1% 0.074 250.3)
-
Step 600
600
#4E76A1
oklch(55.5% 0.081 251.1)
-
Step 700
700
#3F638A
oklch(49% 0.075 251.4)
-
Step 800
800
#345170
oklch(42.6% 0.062 251)
-
Step 900
900
#2E435B
oklch(37.6% 0.049 252.4)
-
Step 950
950
#1B2835
oklch(27.1% 0.03 249)
#91AFD0 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) | #A3B0D2 | 0.024 |
| Deuteranopia (no green cones) | #9BA9CF | 0.019 |
| Tritanopia (no blue cones) | #7EB6BA | 0.049 |
| Achromatopsia (no color) | #ACACAC | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91AFD0
#91AFD0
oklch(74.3% 0.058 251)
- #C4A684
#C4A684
oklch(74.3% 0.058 70.2)
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 #91AFD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.040
- Cool Steel #97A7B3 ΔE 0.041
- Light Cornflower Blue #98C1D9 ΔE 0.049
- French Gray #ADB5BD ΔE 0.051
- Bluegrey #85A3B2 ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.056
- Dark Gray #A9A9A9 ΔE 0.059
- Cool Grey #95A3A6 ΔE 0.060
Use #91AFD0 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.