#277998
Closest named color: Ocean (#017B92). oklch(54.1% 0.09 227.6), rgb(39, 121, 152).
Aa
White text reads best on this color (4.91:1).
About this color
#277998 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.090 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.018 away. White text reads best on it, at 4.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.27:1 |
| White text | 4.91:1 |
Values
| HEX | #277998 |
| RGB | rgb(39, 121, 152) |
| HSL | hsl(196, 59%, 37%) |
| OKLCH | oklch(54.1% 0.09 227.6) |
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 #277998 | 4.91:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #277998 | 4.27:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #277998 text on white | 4.91:1 | AA | Lc 73.7 | Content text, not long reading |
| #277998 text on black | 4.27:1 | AA large text | Lc -28.0 | 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
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADCE5
oklch(88.4% 0.023 229.1)
-
Step 300
300
#A6C6D5
oklch(80.8% 0.04 227.9)
-
Step 400
400
#75A9C1
oklch(70.7% 0.065 228.5)
-
Step 500
500
#4D94B1
oklch(63.2% 0.083 227)
-
Step 600
600 (this color)
#277998
oklch(54.1% 0.09 227.6)
-
Step 700
700
#1E6A86
oklch(49.2% 0.084 227.4)
-
Step 800
800
#1C566D
oklch(42.7% 0.07 228.3)
-
Step 900
900
#1E4758
oklch(37.6% 0.054 228)
-
Step 950
950
#132A34
oklch(27.1% 0.034 228.3)
#277998 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) | #69779A | 0.067 |
| Deuteranopia (no green cones) | #596C98 | 0.057 |
| Tritanopia (no blue cones) | #008283 | 0.051 |
| Achromatopsia (no color) | #717171 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #277998
#277998
oklch(54.1% 0.09 227.6)
- #9A5E3F
#9A5E3F
oklch(54.2% 0.09 47.5)
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 #277998, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.018
- Sea Blue #047495 ΔE 0.022
- Cerulean #457B9D ΔE 0.027
- Dull Blue #49759C ΔE 0.031
- Muted Blue #3B719F ΔE 0.031
- Ocean Blue #03719C ΔE 0.032
- Metallic Blue #4F738E ΔE 0.036
- Stormy Blue #507B9C ΔE 0.037
Use #277998 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.