#37757A
Closest named color: Deep Aqua (#08787F). oklch(52.4% 0.064 202.4), rgb(55, 117, 122).
Aa
White text reads best on this color (5.26:1).
About this color
#37757A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.064 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.023 away. White text reads best on it, at 5.26:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.98:1 |
| White text | 5.26:1 |
Values
| HEX | #37757A |
| RGB | rgb(55, 117, 122) |
| HSL | hsl(184, 38%, 35%) |
| OKLCH | oklch(52.4% 0.064 202.4) |
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 #37757A | 5.26:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #37757A | 3.98:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #37757A text on white | 5.26:1 | AA | Lc 76.0 | Fine for body text |
| #37757A text on black | 3.98:1 | AA large text | Lc -25.7 | Dividers and decoration only |
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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CEDCDE
oklch(88.4% 0.015 207.1)
-
Step 300
300
#ACC7C9
oklch(81% 0.029 202.1)
-
Step 400
400
#7FAAAD
oklch(70.8% 0.046 201.5)
-
Step 500
500
#5D9499
oklch(63% 0.059 203.1)
-
Step 600
600 (this color)
#37757A
oklch(52.4% 0.064 202.4)
-
Step 700
700
#326B6F
oklch(49.1% 0.06 201.5)
-
Step 800
800
#2B575B
oklch(42.7% 0.049 203.2)
-
Step 900
900
#27484A
oklch(37.7% 0.039 200.7)
-
Step 950
950
#182A2C
oklch(27% 0.024 204.7)
#37757A 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) | #6D707A | 0.065 |
| Deuteranopia (no green cones) | #62687A | 0.060 |
| Tritanopia (no blue cones) | #007976 | 0.029 |
| Achromatopsia (no color) | #6C6C6C | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37757A
#37757A
oklch(52.4% 0.064 202.4)
- #8B5B59
#8B5B59
oklch(52.3% 0.064 22.1)
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 #37757A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.023
- Bluegreen #017A79 ΔE 0.028
- Deep Turquoise #017374 ΔE 0.031
- Dark Aquamarine #017371 ΔE 0.033
- Teal #008080 ΔE 0.036
- Ocean #017B92 ΔE 0.040
- Metallic Blue #4F738E ΔE 0.044
- Sea Blue #047495 ΔE 0.048
Use #37757A 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.