#91BCDF
Closest named color: Light Grey Blue (#9DBCD4). oklch(77.7% 0.068 243.3), rgb(145, 188, 223).
Aa
Black text reads best on this color (10.46:1).
About this color
#91BCDF is a medium-light, muted blue. In OKLCH its lightness is 78%, its chroma 0.068 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.020 away. Black text reads best on it, at 10.46:1.
| Hue family | Blues |
| Lightness | medium-light (78%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.46:1 |
| White text | 2.00:1 |
Values
| HEX | #91BCDF |
| RGB | rgb(145, 188, 223) |
| HSL | hsl(207, 55%, 72%) |
| OKLCH | oklch(77.7% 0.068 243.3) |
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 #91BCDF | 2.00:1 | Fails | Lc -43.3 | Non-text elements, placeholder text |
| Black text on #91BCDF | 10.46:1 | AAA | Lc 65.1 | Content text, not long reading |
| #91BCDF text on white | 2.00:1 | Fails | Lc 38.9 | Non-text elements, placeholder text |
| #91BCDF text on black | 10.46:1 | AAA | Lc -63.5 | Content text, not long reading |
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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C5DDF1
oklch(88.6% 0.038 243.3)
-
Step 300
300 (this color)
#91BCDF
oklch(77.7% 0.068 243.3)
-
Step 400
400
#60A8DF
oklch(70.7% 0.109 243.2)
-
Step 500
500
#2791D6
oklch(63.1% 0.139 243.1)
-
Step 600
600
#007ABC
oklch(55.7% 0.136 243.3)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005483
oklch(42.8% 0.104 243)
-
Step 900
900
#02456E
oklch(37.6% 0.092 244.1)
-
Step 950
950
#072940
oklch(27% 0.057 243.1)
#91BCDF 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) | #AEBCE1 | 0.036 |
| Deuteranopia (no green cones) | #A3B3DE | 0.030 |
| Tritanopia (no blue cones) | #77C4C7 | 0.055 |
| Achromatopsia (no color) | #B7B7B7 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BCDF
#91BCDF
oklch(77.7% 0.068 243.3)
- #D6AE89
#D6AE89
oklch(77.8% 0.068 64.3)
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 #91BCDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.020
- Light Cornflower Blue #98C1D9 ΔE 0.021
- Cloudy Blue #ACC2D9 ΔE 0.040
- Lightblue #7BC8F6 ΔE 0.041
- Light Steel Blue #B0C4DE ΔE 0.046
- Sky Blue #87CEEB ΔE 0.047
- Sky #82CAFC ΔE 0.047
- Carolina Blue #8AB8FE ΔE 0.050
Use #91BCDF 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.