#81A4DA
Closest named color: Greyblue (#77A1B5). oklch(71.3% 0.088 258.9), rgb(129, 164, 218).
Aa
Black text reads best on this color (8.25:1).
About this color
#81A4DA is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.088 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.057 away. Black text reads best on it, at 8.25:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.25:1 |
| White text | 2.54:1 |
Values
| HEX | #81A4DA |
| RGB | rgb(129, 164, 218) |
| HSL | hsl(216, 55%, 68%) |
| OKLCH | oklch(71.3% 0.088 258.9) |
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 #81A4DA | 2.54:1 | Fails | Lc -54.9 | Large or bold text, headings |
| Black text on #81A4DA | 8.25:1 | AAA | Lc 54.2 | Large or bold text, headings |
| #81A4DA text on white | 2.54:1 | Fails | Lc 49.8 | Large or bold text, headings |
| #81A4DA text on black | 8.25:1 | AAA | Lc -52.2 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CDDAEE
oklch(88.5% 0.031 258.9)
-
Step 300
300
#ABC2E5
oklch(80.9% 0.056 258.7)
-
Step 400
400 (this color)
#81A4DA
oklch(71.3% 0.088 258.9)
-
Step 500
500
#5E8ACD
oklch(63.1% 0.113 258.6)
-
Step 600
600
#4573BA
oklch(55.7% 0.122 258.8)
-
Step 700
700
#3660A1
oklch(49.1% 0.115 258.9)
-
Step 800
800
#2D4F82
oklch(42.8% 0.094 258.3)
-
Step 900
900
#294268
oklch(37.8% 0.072 258.5)
-
Step 950
950
#18273D
oklch(27.1% 0.046 257.8)
#81A4DA 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) | #90A7DC | 0.021 |
| Deuteranopia (no green cones) | #869FD9 | 0.014 |
| Tritanopia (no blue cones) | #62B0B7 | 0.078 |
| Achromatopsia (no color) | #A2A2A2 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81A4DA
#81A4DA
oklch(71.3% 0.088 258.9)
- #C09C61
#C09C61
oklch(71.3% 0.088 79)
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 #81A4DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.057
- Bluegrey #85A3B2 ΔE 0.059
- Bluey Grey #89A0B0 ΔE 0.060
- Cool Gray #8D99AE ΔE 0.064
- Cool Steel #97A7B3 ΔE 0.065
- Periwinkle Blue #8F99FB ΔE 0.065
- Cornflower Blue #6495ED ΔE 0.066
- Carolina Blue #8AB8FE ΔE 0.068
Use #81A4DA 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.