#37828F
Closest named color: Teal Blue (#01889F). oklch(56.5% 0.076 210.6), rgb(55, 130, 143).
Aa
Black text reads best on this color (4.75:1).
About this color
#37828F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.076 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.029 away. Black text reads best on it, at 4.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #37828F |
| RGB | rgb(55, 130, 143) |
| HSL | hsl(189, 44%, 39%) |
| OKLCH | oklch(56.5% 0.076 210.6) |
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 #37828F | 4.41:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #37828F | 4.75:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #37828F text on white | 4.41:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #37828F text on black | 4.75:1 | AA | Lc -31.2 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDE0
oklch(88.6% 0.019 209.4)
-
Step 300
300
#A8C7CD
oklch(80.9% 0.034 210.7)
-
Step 400
400
#78AAB4
oklch(70.6% 0.055 211.4)
-
Step 500
500
#5395A1
oklch(63.1% 0.07 210.6)
-
Step 600
600 (this color)
#37828F
oklch(56.5% 0.076 210.6)
-
Step 700
700
#256B77
oklch(49% 0.071 211)
-
Step 800
800
#215861
oklch(42.8% 0.059 209.9)
-
Step 900
900
#21484F
oklch(37.6% 0.046 210.7)
-
Step 950
950
#142A2E
oklch(26.9% 0.029 210.5)
#37828F 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) | #777E90 | 0.071 |
| Deuteranopia (no green cones) | #6A748F | 0.065 |
| Tritanopia (no blue cones) | #008886 | 0.034 |
| Achromatopsia (no color) | #787878 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37828F
#37828F
oklch(56.5% 0.076 210.6)
- #9E655B
#9E655B
oklch(56.6% 0.076 30.5)
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 #37828F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.029
- Dark Cyan #008B8B ΔE 0.035
- Ocean #017B92 ΔE 0.035
- Teal #008080 ΔE 0.036
- Cerulean #457B9D ΔE 0.037
- Stormy Blue #507B9C ΔE 0.040
- Deep Aqua #08787F ΔE 0.046
- Grey Blue #647D8E ΔE 0.046
Use #37828F 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.