#91ACE3
Closest named color: Carolina Blue (#8AB8FE). oklch(74.5% 0.085 264.2), rgb(145, 172, 227).
Aa
Black text reads best on this color (9.21:1).
About this color
#91ACE3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.085 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.043 away. Black text reads best on it, at 9.21:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.21:1 |
| White text | 2.27:1 |
Values
| HEX | #91ACE3 |
| RGB | rgb(145, 172, 227) |
| HSL | hsl(220, 59%, 73%) |
| OKLCH | oklch(74.5% 0.085 264.2) |
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 #91ACE3 | 2.27:1 | Fails | Lc -49.8 | Large or bold text, headings |
| Black text on #91ACE3 | 9.21:1 | AAA | Lc 59.1 | Large or bold text, headings |
| #91ACE3 text on white | 2.27:1 | Fails | Lc 44.9 | Non-text elements, placeholder text |
| #91ACE3 text on black | 9.21:1 | AAA | Lc -57.2 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9ED
oklch(88.4% 0.03 264.4)
-
Step 300
300
#AFC1E4
oklch(80.9% 0.053 263.7)
-
Step 400
400 (this color)
#91ACE3
oklch(74.5% 0.085 264.2)
-
Step 500
500
#6888CC
oklch(63.2% 0.109 264.3)
-
Step 600
600
#4F71B9
oklch(55.7% 0.119 263.9)
-
Step 700
700
#405E9F
oklch(49.1% 0.11 264.1)
-
Step 800
800
#354D81
oklch(42.7% 0.092 264.2)
-
Step 900
900
#2E4067
oklch(37.6% 0.071 264.4)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#91ACE3 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) | #99B0E5 | 0.016 |
| Deuteranopia (no green cones) | #91A8E2 | 0.011 |
| Tritanopia (no blue cones) | #78B7BF | 0.076 |
| Achromatopsia (no color) | #ACACAC | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91ACE3
#91ACE3
oklch(74.5% 0.085 264.2)
- #C6A86C
#C6A86C
oklch(74.5% 0.086 83.9)
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 #91ACE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.043
- Light Grey Blue #9DBCD4 ΔE 0.058
- Pastel Blue #A2BFFE ΔE 0.063
- Light Cornflower Blue #98C1D9 ΔE 0.065
- Cool Steel #97A7B3 ΔE 0.068
- Periwinkle Blue #8F99FB ΔE 0.069
- Lightblue #7BC8F6 ΔE 0.073
- Bluegrey #85A3B2 ΔE 0.074
Use #91ACE3 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.