#37ABE1
Closest named color: Turquoise Blue (#06B1C4). oklch(70.1% 0.128 233.4), rgb(55, 171, 225).
Aa
Black text reads best on this color (8.07:1).
About this color
#37ABE1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.128 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.054 away. Black text reads best on it, at 8.07:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.07:1 |
| White text | 2.60:1 |
Values
| HEX | #37ABE1 |
| RGB | rgb(55, 171, 225) |
| HSL | hsl(199, 74%, 55%) |
| OKLCH | oklch(70.1% 0.128 233.4) |
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 #37ABE1 | 2.60:1 | Fails | Lc -55.5 | Large or bold text, headings |
| Black text on #37ABE1 | 8.07:1 | AAA | Lc 53.6 | Large or bold text, headings |
| #37ABE1 text on white | 2.60:1 | Fails | Lc 50.4 | Large or bold text, headings |
| #37ABE1 text on black | 8.07:1 | AAA | Lc -51.5 | 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
#DCEDF7
oklch(93.6% 0.023 233.4)
-
Step 200
200
#BDDFF2
oklch(88.5% 0.044 232.4)
-
Step 300
300
#8CCAEC
oklch(80.9% 0.08 233.1)
-
Step 400
400 (this color)
#37ABE1
oklch(70.1% 0.128 233.4)
-
Step 500
500
#0095CC
oklch(63.1% 0.132 233.7)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#002A3D
oklch(26.9% 0.056 233.8)
#37ABE1 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) | #90A9E4 | 0.081 |
| Deuteranopia (no green cones) | #7999E0 | 0.068 |
| Tritanopia (no blue cones) | #00B9BD | 0.078 |
| Achromatopsia (no color) | #A0A0A0 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37ABE1
#37ABE1
oklch(70.1% 0.128 233.4)
- #DC874D
#DC874D
oklch(70.2% 0.128 53.4)
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 #37ABE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.054
- Deep Sky Blue #00BFFF ΔE 0.060
- Chefchaouen Blue #4895EF ΔE 0.068
- Cornflower Blue #6495ED ΔE 0.071
- Greyblue #77A1B5 ΔE 0.075
- Dark Sky Blue #448EE4 ΔE 0.081
- Vivid Sky Blue #4CC9F0 ΔE 0.085
- Bluegrey #85A3B2 ΔE 0.088
Use #37ABE1 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.