#91ACE5
Closest named color: Carolina Blue (#8AB8FE). oklch(74.5% 0.088 264.7), rgb(145, 172, 229).
Aa
Black text reads best on this color (9.23:1).
About this color
#91ACE5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.088 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.041 away. Black text reads best on it, at 9.23:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.23:1 |
| White text | 2.27:1 |
Values
| HEX | #91ACE5 |
| RGB | rgb(145, 172, 229) |
| HSL | hsl(221, 62%, 73%) |
| OKLCH | oklch(74.5% 0.088 264.7) |
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 #91ACE5 | 2.27:1 | Fails | Lc -49.6 | Large or bold text, headings |
| Black text on #91ACE5 | 9.23:1 | AAA | Lc 59.2 | Large or bold text, headings |
| #91ACE5 text on white | 2.27:1 | Fails | Lc 44.8 | Non-text elements, placeholder text |
| #91ACE5 text on black | 9.23:1 | AAA | Lc -57.3 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#AFC1E5
oklch(80.9% 0.055 264.2)
-
Step 400
400 (this color)
#91ACE5
oklch(74.5% 0.088 264.7)
-
Step 500
500
#6787CE
oklch(63% 0.114 264.9)
-
Step 600
600
#4F70BB
oklch(55.6% 0.123 264.8)
-
Step 700
700
#405EA1
oklch(49.2% 0.113 264.4)
-
Step 800
800
#354D82
oklch(42.8% 0.093 264.4)
-
Step 900
900
#2E4069
oklch(37.7% 0.074 265.1)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#91ACE5 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) | #99B0E8 | 0.016 |
| Deuteranopia (no green cones) | #90A8E4 | 0.011 |
| Tritanopia (no blue cones) | #77B8C0 | 0.079 |
| Achromatopsia (no color) | #ACACAC | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91ACE5
#91ACE5
oklch(74.5% 0.088 264.7)
- #C6A86A
#C6A86A
oklch(74.4% 0.088 84.6)
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 #91ACE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.041
- Light Grey Blue #9DBCD4 ΔE 0.059
- Pastel Blue #A2BFFE ΔE 0.061
- Light Cornflower Blue #98C1D9 ΔE 0.066
- Periwinkle Blue #8F99FB ΔE 0.067
- Cool Steel #97A7B3 ΔE 0.071
- Lightblue #7BC8F6 ΔE 0.073
- Bluegrey #85A3B2 ΔE 0.077
Use #91ACE5 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.