#37839C
Closest named color: Teal Blue (#01889F). oklch(57.3% 0.083 222.9), rgb(55, 131, 156).
Aa
Black text reads best on this color (4.88:1).
About this color
#37839C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.083 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.023 away. Black text reads best on it, at 4.88:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.88:1 |
| White text | 4.29:1 |
Values
| HEX | #37839C |
| RGB | rgb(55, 131, 156) |
| HSL | hsl(195, 48%, 41%) |
| OKLCH | oklch(57.3% 0.083 222.9) |
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 #37839C | 4.29:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #37839C | 4.88:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #37839C text on white | 4.29:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #37839C text on black | 4.88:1 | AA | Lc -32.2 | 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
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CBDCE3
oklch(88.4% 0.021 224.3)
-
Step 300
300
#A7C7D2
oklch(81% 0.038 220.6)
-
Step 400
400
#77A9BC
oklch(70.6% 0.06 223.6)
-
Step 500
500
#5194AB
oklch(63.1% 0.076 222.5)
-
Step 600
600 (this color)
#37839C
oklch(57.3% 0.083 222.9)
-
Step 700
700
#236A81
oklch(49.1% 0.078 223.5)
-
Step 800
800
#1F5768
oklch(42.8% 0.064 221.4)
-
Step 900
900
#204755
oklch(37.6% 0.05 224.1)
-
Step 950
950
#142A32
oklch(27.1% 0.032 223.6)
#37839C 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) | #75809D | 0.067 |
| Deuteranopia (no green cones) | #66759C | 0.060 |
| Tritanopia (no blue cones) | #008B8B | 0.047 |
| Achromatopsia (no color) | #7A7A7A | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37839C
#37839C
oklch(57.3% 0.083 222.9)
- #A26850
#A26850
oklch(57.4% 0.083 43.2)
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 #37839C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.023
- Cerulean #457B9D ΔE 0.026
- Stormy Blue #507B9C ΔE 0.030
- Blue NCS #118AB2 ΔE 0.036
- Ocean #017B92 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.042
- Dull Blue #49759C ΔE 0.042
- Off Blue #5684AE ΔE 0.043
Use #37839C 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.