#37909B
Closest named color: Teal Green (#0A9396). oklch(60.5% 0.085 206.6), rgb(55, 144, 155).
Aa
Black text reads best on this color (5.62:1).
About this color
#37909B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.085 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Green (#0A9396), ΔE 0.022 away. Black text reads best on it, at 5.62:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Teal Green (#0A9396) |
| Black text | 5.62:1 |
| White text | 3.73:1 |
Values
| HEX | #37909B |
| RGB | rgb(55, 144, 155) |
| HSL | hsl(187, 48%, 41%) |
| OKLCH | oklch(60.5% 0.085 206.6) |
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 #37909B | 3.73:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #37909B | 5.62:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #37909B text on white | 3.73:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #37909B text on black | 5.62:1 | AA | Lc -37.0 | 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 500.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C9DEE1
oklch(88.6% 0.023 207.1)
-
Step 300
300
#A2C9CE
oklch(80.9% 0.042 206)
-
Step 400
400
#6DADB5
oklch(70.7% 0.067 205.9)
-
Step 500
500 (this color)
#37909B
oklch(60.5% 0.085 206.6)
-
Step 600
600
#11828E
oklch(55.6% 0.092 206.6)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#085A62
oklch(42.8% 0.071 205.7)
-
Step 900
900
#154A50
oklch(37.8% 0.055 205.9)
-
Step 950
950
#0E2B2F
oklch(26.9% 0.035 207.5)
#37909B 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) | #848B9C | 0.082 |
| Deuteranopia (no green cones) | #757F9B | 0.076 |
| Tritanopia (no blue cones) | #009693 | 0.031 |
| Achromatopsia (no color) | #848484 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37909B
#37909B
oklch(60.5% 0.085 206.6)
- #AF6E66
#AF6E66
oklch(60.6% 0.084 27.4)
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 #37909B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Green #0A9396 ΔE 0.022
- Sea #3C9992 ΔE 0.035
- Dusty Teal #4C9085 ΔE 0.035
- Teal Blue #01889F ΔE 0.036
- Dark Cyan #008B8B ΔE 0.037
- Blue Green #0F9B8E ΔE 0.046
- Blue NCS #118AB2 ΔE 0.047
- Persian Green #2A9D8F ΔE 0.048
Use #37909B 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.