#91B1EB
Closest named color: Carolina Blue (#8AB8FE). oklch(75.8% 0.091 262), rgb(145, 177, 235).
Aa
Black text reads best on this color (9.69:1).
About this color
#91B1EB is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.091 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.029 away. Black text reads best on it, at 9.69:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.69:1 |
| White text | 2.16:1 |
Values
| HEX | #91B1EB |
| RGB | rgb(145, 177, 235) |
| HSL | hsl(219, 69%, 75%) |
| OKLCH | oklch(75.8% 0.091 262) |
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 #91B1EB | 2.16:1 | Fails | Lc -47.2 | Large or bold text, headings |
| Black text on #91B1EB | 9.69:1 | AAA | Lc 61.4 | Content text, not long reading |
| #91B1EB text on white | 2.16:1 | Fails | Lc 42.5 | Non-text elements, placeholder text |
| #91B1EB text on black | 9.69:1 | AAA | Lc -59.7 | 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 300.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFC
oklch(93.5% 0.027 262.3)
-
Step 200
200
#C7DAFB
oklch(88.5% 0.05 261.5)
-
Step 300
300 (this color)
#91B1EB
oklch(75.8% 0.091 262)
-
Step 400
400
#6D9FFB
oklch(70.8% 0.146 261.8)
-
Step 500
500
#4783F8
oklch(63.1% 0.186 262.1)
-
Step 600
600
#2969E7
oklch(55.6% 0.202 262)
-
Step 700
700
#1D56C9
oklch(49% 0.189 262.2)
-
Step 800
800
#1A47A2
oklch(42.6% 0.156 262.2)
-
Step 900
900
#1B3D81
oklch(37.7% 0.122 262.3)
-
Step 950
950
#10244B
oklch(26.8% 0.077 262.1)
#91B1EB 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) | #9DB5EE | 0.019 |
| Deuteranopia (no green cones) | #93ACEA | 0.013 |
| Tritanopia (no blue cones) | #74BDC5 | 0.081 |
| Achromatopsia (no color) | #B0B0B0 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B1EB
#91B1EB
oklch(75.8% 0.091 262)
- #CEAB6C
#CEAB6C
oklch(75.8% 0.091 81.4)
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 #91B1EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.029
- Pastel Blue #A2BFFE ΔE 0.048
- Light Grey Blue #9DBCD4 ΔE 0.054
- Light Cornflower Blue #98C1D9 ΔE 0.058
- Lightblue #7BC8F6 ΔE 0.061
- Sky #82CAFC ΔE 0.064
- Cloudy Blue #ACC2D9 ΔE 0.070
- Periwinkle Blue #8F99FB ΔE 0.073
Use #91B1EB 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.