#277B79
Closest named color: Bluegreen (#017A79). oklch(53.3% 0.078 192.8), rgb(39, 123, 121).
Aa
White text reads best on this color (5.00:1).
About this color
#277B79 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.078 and its hue 193°. 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 5.00:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #277B79 |
| RGB | rgb(39, 123, 121) |
| HSL | hsl(179, 52%, 32%) |
| OKLCH | oklch(53.3% 0.078 192.8) |
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 #277B79 | 5.00:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #277B79 | 4.19:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #277B79 text on white | 5.00:1 | AA | Lc 74.3 | Content text, not long reading |
| #277B79 text on black | 4.19:1 | AA large text | Lc -27.4 | 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
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CBDDDC
oklch(88.4% 0.019 192.8)
-
Step 300
300
#A7C8C7
oklch(80.8% 0.035 194.2)
-
Step 400
400
#77ACAA
oklch(70.7% 0.056 193)
-
Step 500
500
#509795
oklch(63% 0.072 193.1)
-
Step 600
600 (this color)
#277B79
oklch(53.3% 0.078 192.8)
-
Step 700
700
#216E6C
oklch(49.2% 0.073 192.5)
-
Step 800
800
#1E5958
oklch(42.6% 0.06 193.6)
-
Step 900
900
#1F4A48
oklch(37.8% 0.048 191.2)
-
Step 950
950
#132B2A
oklch(26.9% 0.03 192)
#277B79 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) | #737579 | 0.082 |
| Deuteranopia (no green cones) | #676B7A | 0.078 |
| Tritanopia (no blue cones) | #007F7A | 0.016 |
| Achromatopsia (no color) | #6F6F6F | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #277B79
#277B79
oklch(53.3% 0.078 192.8)
- #945960
#945960
oklch(53.2% 0.078 12.4)
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 #277B79, 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 0.018
- Deep Aqua #08787F ΔE 0.020
- Deep Turquoise #017374 ΔE 0.031
- Dark Aquamarine #017371 ΔE 0.032
- Ocean #017B92 ΔE 0.040
- Dark Cyan #008B8B ΔE 0.048
- Sea Blue #047495 ΔE 0.057
Use #277B79 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.