#277E91
Closest named color: Ocean (#017B92). oklch(55.1% 0.085 215.5), rgb(39, 126, 145).
Aa
White text reads best on this color (4.68:1).
About this color
#277E91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.085 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.017 away. White text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.47:1 |
| White text | 4.68:1 |
Values
| HEX | #277E91 |
| RGB | rgb(39, 126, 145) |
| HSL | hsl(191, 58%, 36%) |
| OKLCH | oklch(55.1% 0.085 215.5) |
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 #277E91 | 4.68:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #277E91 | 4.47:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #277E91 text on white | 4.68:1 | AA | Lc 72.2 | Content text, not long reading |
| #277E91 text on black | 4.47:1 | AA large text | Lc -29.4 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE2
oklch(88.5% 0.022 215.3)
-
Step 300
300
#A6C7D0
oklch(80.8% 0.038 216.1)
-
Step 400
400
#74ABB9
oklch(70.8% 0.061 215.4)
-
Step 500
500
#4C95A7
oklch(63% 0.077 215.9)
-
Step 600
600 (this color)
#277E91
oklch(55.1% 0.085 215.5)
-
Step 700
700
#1A6C7D
oklch(49.2% 0.079 215.2)
-
Step 800
800
#195866
oklch(42.8% 0.066 215.8)
-
Step 900
900
#1D4853
oklch(37.6% 0.051 217.1)
-
Step 950
950
#122A30
oklch(26.8% 0.032 216)
#277E91 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) | #717A92 | 0.075 |
| Deuteranopia (no green cones) | #626F91 | 0.068 |
| Tritanopia (no blue cones) | #008584 | 0.036 |
| Achromatopsia (no color) | #747474 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #277E91
#277E91
oklch(55.1% 0.085 215.5)
- #9D5F4F
#9D5F4F
oklch(55.1% 0.085 35.3)
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 #277E91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.017
- Teal Blue #01889F ΔE 0.031
- Cerulean #457B9D ΔE 0.034
- Teal #008080 ΔE 0.034
- Deep Aqua #08787F ΔE 0.035
- Sea Blue #047495 ΔE 0.037
- Stormy Blue #507B9C ΔE 0.041
- Bluegreen #017A79 ΔE 0.042
Use #277E91 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.