#277B77
Closest named color: Bluegreen (#017A79). oklch(53.3% 0.079 190.5), rgb(39, 123, 119).
Aa
White text reads best on this color (5.01:1).
About this color
#277B77 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.079 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.014 away. White text reads best on it, at 5.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #277B77 |
| RGB | rgb(39, 123, 119) |
| HSL | hsl(177, 52%, 32%) |
| OKLCH | oklch(53.3% 0.079 190.5) |
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 #277B77 | 5.01:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #277B77 | 4.18:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #277B77 text on white | 5.01:1 | AA | Lc 74.4 | Content text, not long reading |
| #277B77 text on black | 4.18:1 | AA large text | Lc -27.3 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDEDC
oklch(88.6% 0.02 189.2)
-
Step 300
300
#A7C8C6
oklch(80.8% 0.035 192)
-
Step 400
400
#77ACA9
oklch(70.7% 0.056 191.5)
-
Step 500
500
#509893
oklch(63.2% 0.073 189.6)
-
Step 600
600 (this color)
#277B77
oklch(53.3% 0.079 190.5)
-
Step 700
700
#216E6A
oklch(49.1% 0.073 190.1)
-
Step 800
800
#1E5A57
oklch(42.8% 0.061 190.5)
-
Step 900
900
#1F4A47
oklch(37.8% 0.048 189.2)
-
Step 950
950
#132B2A
oklch(26.9% 0.03 192)
#277B77 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) | #747577 | 0.083 |
| Deuteranopia (no green cones) | #676B78 | 0.079 |
| Tritanopia (no blue cones) | #007E7A | 0.014 |
| Achromatopsia (no color) | #6F6F6F | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #277B77
#277B77
oklch(53.3% 0.079 190.5)
- #945962
#945962
oklch(53.3% 0.078 10.2)
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 #277B77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.014
- Teal #008080 ΔE 0.019
- Deep Aqua #08787F ΔE 0.021
- Deep Turquoise #017374 ΔE 0.031
- Dark Aquamarine #017371 ΔE 0.031
- Ocean #017B92 ΔE 0.043
- Dark Cyan #008B8B ΔE 0.049
- Sea Blue #047495 ΔE 0.059
Use #277B77 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.