#37899D
Closest named color: Teal Blue (#01889F). oklch(58.8% 0.084 216.7), rgb(55, 137, 157).
Aa
Black text reads best on this color (5.22:1).
About this color
#37899D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.084 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.022 away. Black text reads best on it, at 5.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.22:1 |
| White text | 4.01:1 |
Values
| HEX | #37899D |
| RGB | rgb(55, 137, 157) |
| HSL | hsl(192, 48%, 42%) |
| OKLCH | oklch(58.8% 0.084 216.7) |
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 #37899D | 4.01:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #37899D | 5.22:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #37899D text on white | 4.01:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #37899D text on black | 5.22:1 | AA | Lc -34.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A6C7D0
oklch(80.8% 0.038 216.1)
-
Step 400
400
#75AAB9
oklch(70.6% 0.06 217.4)
-
Step 500
500
#4D95A8
oklch(63.1% 0.077 217.2)
-
Step 600
600 (this color)
#37899D
oklch(58.8% 0.084 216.7)
-
Step 700
700
#1D6B7D
oklch(49% 0.078 216.9)
-
Step 800
800
#1B5866
oklch(42.8% 0.065 216.2)
-
Step 900
900
#1E4853
oklch(37.7% 0.05 217.5)
-
Step 950
950
#132A31
oklch(27% 0.032 219.8)
#37899D 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) | #7C859E | 0.074 |
| Deuteranopia (no green cones) | #6D7A9D | 0.067 |
| Tritanopia (no blue cones) | #00908F | 0.040 |
| Achromatopsia (no color) | #7F7F7F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37899D
#37899D
oklch(58.8% 0.084 216.7)
- #A86B59
#A86B59
oklch(58.9% 0.083 37.2)
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 #37899D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.022
- Blue NCS #118AB2 ΔE 0.034
- Teal Green #0A9396 ΔE 0.038
- Dark Cyan #008B8B ΔE 0.039
- Cerulean #457B9D ΔE 0.042
- Stormy Blue #507B9C ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.044
- Off Blue #5684AE ΔE 0.045
Use #37899D 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.