#377783
Closest named color: Deep Aqua (#08787F). oklch(53.2% 0.068 211.5), rgb(55, 119, 131).
Aa
White text reads best on this color (5.08:1).
About this color
#377783 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.068 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.025 away. White text reads best on it, at 5.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.12:1 |
| White text | 5.08:1 |
Values
| HEX | #377783 |
| RGB | rgb(55, 119, 131) |
| HSL | hsl(189, 41%, 36%) |
| OKLCH | oklch(53.2% 0.068 211.5) |
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 #377783 | 5.08:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #377783 | 4.12:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #377783 text on white | 5.08:1 | AA | Lc 74.9 | Content text, not long reading |
| #377783 text on black | 4.12:1 | AA large text | Lc -26.8 | 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
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CDDCDF
oklch(88.4% 0.017 211)
-
Step 300
300
#ABC6CC
oklch(80.8% 0.03 212.6)
-
Step 400
400
#7DA9B2
oklch(70.6% 0.049 211.6)
-
Step 500
500
#5B949F
oklch(63.1% 0.062 211.2)
-
Step 600
600 (this color)
#377783
oklch(53.2% 0.068 211.5)
-
Step 700
700
#306A75
oklch(49% 0.063 211.7)
-
Step 800
800
#29575F
oklch(42.8% 0.052 210.2)
-
Step 900
900
#26474E
oklch(37.6% 0.04 212.8)
-
Step 950
950
#172A2E
oklch(27.1% 0.026 212.5)
#377783 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) | #6D7384 | 0.063 |
| Deuteranopia (no green cones) | #626A83 | 0.059 |
| Tritanopia (no blue cones) | #007C7B | 0.033 |
| Achromatopsia (no color) | #6E6E6E | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #377783
#377783
oklch(53.2% 0.068 211.5)
- #8F5E54
#8F5E54
oklch(53.2% 0.067 32)
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 #377783, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.025
- Ocean #017B92 ΔE 0.030
- Bluegreen #017A79 ΔE 0.033
- Metallic Blue #4F738E ΔE 0.035
- Teal #008080 ΔE 0.036
- Sea Blue #047495 ΔE 0.040
- Deep Turquoise #017374 ΔE 0.040
- Dark Aquamarine #017371 ΔE 0.043
Use #377783 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.