#377C8F
Closest named color: Ocean (#017B92). oklch(55% 0.075 218.6), rgb(55, 124, 143).
Aa
White text reads best on this color (4.72:1).
About this color
#377C8F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.075 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.025 away. White text reads best on it, at 4.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #377C8F |
| RGB | rgb(55, 124, 143) |
| HSL | hsl(193, 44%, 39%) |
| OKLCH | oklch(55% 0.075 218.6) |
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 #377C8F | 4.72:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #377C8F | 4.44:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #377C8F text on white | 4.72:1 | AA | Lc 72.6 | Content text, not long reading |
| #377C8F text on black | 4.44:1 | AA large text | Lc -29.1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CCDCE1
oklch(88.4% 0.019 218.4)
-
Step 300
300
#A9C6CF
oklch(80.8% 0.034 218.5)
-
Step 400
400
#7BA9B7
oklch(70.7% 0.053 218.6)
-
Step 500
500
#5694A6
oklch(63.2% 0.069 218.6)
-
Step 600
600 (this color)
#377C8F
oklch(55% 0.075 218.6)
-
Step 700
700
#2A6A7B
oklch(49.1% 0.07 218.3)
-
Step 800
800
#255764
oklch(42.8% 0.057 217.4)
-
Step 900
900
#234752
oklch(37.6% 0.045 220)
-
Step 950
950
#162A30
oklch(27.1% 0.028 219)
#377C8F 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) | #707990 | 0.064 |
| Deuteranopia (no green cones) | #636F8F | 0.058 |
| Tritanopia (no blue cones) | #008382 | 0.041 |
| Achromatopsia (no color) | #737373 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #377C8F
#377C8F
oklch(55% 0.075 218.6)
- #976251
#976251
oklch(54.9% 0.074 38.5)
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 #377C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.025
- Cerulean #457B9D ΔE 0.028
- Metallic Blue #4F738E ΔE 0.033
- Stormy Blue #507B9C ΔE 0.034
- Dull Blue #49759C ΔE 0.037
- Deep Aqua #08787F ΔE 0.038
- Teal Blue #01889F ΔE 0.039
- Teal #008080 ΔE 0.039
Use #377C8F 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.