#B1D5DF
Closest named color: Light Blue (#ADD8E6). oklch(85% 0.04 216.4), rgb(177, 213, 223).
Aa
Black text reads best on this color (13.45:1).
About this color
#B1D5DF is a light, muted teal or cyan. In OKLCH its lightness is 85%, its chroma 0.040 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue (#ADD8E6), ΔE 0.011 away. Black text reads best on it, at 13.45:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 13.45:1 |
| White text | 1.56:1 |
Values
| HEX | #B1D5DF |
| RGB | rgb(177, 213, 223) |
| HSL | hsl(193, 42%, 78%) |
| OKLCH | oklch(85% 0.04 216.4) |
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 #B1D5DF | 1.56:1 | Fails | Lc -29.1 | Dividers and decoration only |
| Black text on #B1D5DF | 13.45:1 | AAA | Lc 78.1 | Fine for body text |
| #B1D5DF text on white | 1.56:1 | Fails | Lc 25.7 | Dividers and decoration only |
| #B1D5DF text on black | 13.45:1 | AAA | Lc -77.4 | Fine for body text |
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 200.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#DFEDF0
oklch(93.7% 0.015 212)
-
Step 200
200 (this color)
#B1D5DF
oklch(85% 0.04 216.4)
-
Step 300
300
#9BCAD6
oklch(81% 0.052 215.1)
-
Step 400
400
#5EAEC2
oklch(70.7% 0.084 216)
-
Step 500
500
#1D99B3
oklch(63.2% 0.106 216.5)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006C80
oklch(49% 0.087 216.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#052C34
oklch(27.1% 0.044 214.8)
#B1D5DF 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) | #CED2E0 | 0.037 |
| Deuteranopia (no green cones) | #C6CCDF | 0.034 |
| Tritanopia (no blue cones) | #A4D9D8 | 0.023 |
| Achromatopsia (no color) | #CFCFCF | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1D5DF
#B1D5DF
oklch(85% 0.04 216.4)
- #E7C5BC
#E7C5BC
oklch(85% 0.041 35.2)
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 #B1D5DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue #ADD8E6 ΔE 0.011
- Celeste #A8DADC ΔE 0.018
- Powder Blue #B0E0E6 ΔE 0.028
- Light Blue Grey #B7C9E2 ΔE 0.034
- Cadet Gray #CED4DA ΔE 0.036
- Light Gray #D3D3D3 ΔE 0.044
- Light Steel Blue #B0C4DE ΔE 0.046
- Cloudy Blue #ACC2D9 ΔE 0.051
Use #B1D5DF 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.