#B1CAEF
Closest named color: Light Blue Grey (#B7C9E2). oklch(83.3% 0.059 258.1), rgb(177, 202, 239).
Aa
Black text reads best on this color (12.56:1).
About this color
#B1CAEF is a light, muted blue. In OKLCH its lightness is 83%, its chroma 0.059 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue Grey (#B7C9E2), ΔE 0.019 away. Black text reads best on it, at 12.56:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Light Blue Grey (#B7C9E2) |
| Black text | 12.56:1 |
| White text | 1.67:1 |
Values
| HEX | #B1CAEF |
| RGB | rgb(177, 202, 239) |
| HSL | hsl(216, 66%, 82%) |
| OKLCH | oklch(83.3% 0.059 258.1) |
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 #B1CAEF | 1.67:1 | Fails | Lc -33.2 | Non-text elements, placeholder text |
| Black text on #B1CAEF | 12.56:1 | AAA | Lc 74.4 | Content text, not long reading |
| #B1CAEF text on white | 1.67:1 | Fails | Lc 29.5 | Dividers and decoration only |
| #B1CAEF text on black | 12.56:1 | AAA | Lc -73.4 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300 (this color)
#B1CAEF
oklch(83.3% 0.059 258.1)
-
Step 400
400
#7CA2DB
oklch(70.7% 0.094 258.3)
-
Step 500
500
#5A8AD1
oklch(63.1% 0.12 258)
-
Step 600
600
#3F73BE
oklch(55.6% 0.13 257.7)
-
Step 700
700
#3160A4
oklch(49.1% 0.121 257.8)
-
Step 800
800
#294F85
oklch(42.8% 0.1 257.4)
-
Step 900
900
#26426B
oklch(37.8% 0.078 257.9)
-
Step 950
950
#17273E
oklch(27.1% 0.048 257.5)
#B1CAEF 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) | #BDCBF1 | 0.016 |
| Deuteranopia (no green cones) | #B7C5EE | 0.014 |
| Tritanopia (no blue cones) | #A0D2D6 | 0.052 |
| Achromatopsia (no color) | #C8C8C8 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1CAEF
#B1CAEF
oklch(83.3% 0.059 258.1)
- #DEC49E
#DEC49E
oklch(83.3% 0.059 77.2)
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 #B1CAEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue Grey #B7C9E2 ΔE 0.019
- Light Steel Blue #B0C4DE ΔE 0.025
- Baby Blue #A2CFFE ΔE 0.026
- Light Periwinkle #C1C6FC ΔE 0.032
- Cloudy Blue #ACC2D9 ΔE 0.034
- Light Blue #ADD8E6 ΔE 0.044
- Pastel Blue #A2BFFE ΔE 0.046
- Light Sky Blue #87CEFA ΔE 0.047
Use #B1CAEF 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.