#37ABE8
Closest named color: Deep Sky Blue (#00BFFF). oklch(70.4% 0.134 236.7), rgb(55, 171, 232).
Aa
Black text reads best on this color (8.15:1).
About this color
#37ABE8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.134 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.056 away. Black text reads best on it, at 8.15:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.15:1 |
| White text | 2.57:1 |
Values
| HEX | #37ABE8 |
| RGB | rgb(55, 171, 232) |
| HSL | hsl(201, 79%, 56%) |
| OKLCH | oklch(70.4% 0.134 236.7) |
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 #37ABE8 | 2.57:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #37ABE8 | 8.15:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #37ABE8 text on white | 2.57:1 | Fails | Lc 50.0 | Large or bold text, headings |
| #37ABE8 text on black | 8.15:1 | AAA | Lc -52.0 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DBEDF8
oklch(93.6% 0.024 234.4)
-
Step 200
200
#BDDFF4
oklch(88.6% 0.046 235.2)
-
Step 300
300
#8BC9F0
oklch(80.8% 0.084 236.8)
-
Step 400
400 (this color)
#37ABE8
oklch(70.4% 0.134 236.7)
-
Step 500
500
#0094D1
oklch(63.1% 0.137 236.6)
-
Step 600
600
#007CB0
oklch(55.5% 0.121 236.7)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#37ABE8 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) | #8EABEB | 0.078 |
| Deuteranopia (no green cones) | #769AE7 | 0.064 |
| Tritanopia (no blue cones) | #00BBC0 | 0.087 |
| Achromatopsia (no color) | #A1A1A1 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37ABE8
#37ABE8
oklch(70.4% 0.134 236.7)
- #DE8843
#DE8843
oklch(70.5% 0.134 56.8)
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 #37ABE8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.064
- Cornflower Blue #6495ED ΔE 0.066
- Dark Sky Blue #448EE4 ΔE 0.078
- Greyblue #77A1B5 ΔE 0.083
- Vivid Sky Blue #4CC9F0 ΔE 0.085
- Bright Sky Blue #02CCFE ΔE 0.088
Use #37ABE8 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.