#37868E
Closest named color: Dark Cyan (#008B8B). oklch(57.5% 0.077 204.4), rgb(55, 134, 142).
Aa
Black text reads best on this color (4.96:1).
About this color
#37868E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.077 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.026 away. Black text reads best on it, at 4.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.96:1 |
| White text | 4.23:1 |
Values
| HEX | #37868E |
| RGB | rgb(55, 134, 142) |
| HSL | hsl(186, 44%, 39%) |
| OKLCH | oklch(57.5% 0.077 204.4) |
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 #37868E | 4.23:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #37868E | 4.96:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #37868E text on white | 4.23:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #37868E text on black | 4.96:1 | AA | Lc -32.7 | Non-text elements, placeholder 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A7C8CB
oklch(81% 0.036 203.2)
-
Step 400
400
#77ABB1
oklch(70.7% 0.055 205)
-
Step 500
500
#51969D
oklch(63.1% 0.07 204.1)
-
Step 600
600 (this color)
#37868E
oklch(57.5% 0.077 204.4)
-
Step 700
700
#226C74
oklch(49% 0.072 205.4)
-
Step 800
800
#1F585E
oklch(42.6% 0.059 204.9)
-
Step 900
900
#20494D
oklch(37.8% 0.046 203.9)
-
Step 950
950
#142B2D
oklch(27.1% 0.029 202.9)
#37868E 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) | #7C818F | 0.077 |
| Deuteranopia (no green cones) | #6F778E | 0.071 |
| Tritanopia (no blue cones) | #008B88 | 0.029 |
| Achromatopsia (no color) | #7B7B7B | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37868E
#37868E
oklch(57.5% 0.077 204.4)
- #A26762
#A26762
oklch(57.6% 0.077 25)
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 #37868E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.026
- Teal Blue #01889F ΔE 0.030
- Teal Green #0A9396 ΔE 0.038
- Teal #008080 ΔE 0.038
- Dusty Teal #4C9085 ΔE 0.042
- Ocean #017B92 ΔE 0.046
- Cerulean #457B9D ΔE 0.047
- Stormy Blue #507B9C ΔE 0.050
Use #37868E 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.