#276B8A
Closest named color: Sea Blue (#047495). oklch(49.9% 0.083 231.7), rgb(39, 107, 138).
Aa
White text reads best on this color (5.90:1).
About this color
#276B8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.083 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.028 away. White text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #276B8A |
| RGB | rgb(39, 107, 138) |
| HSL | hsl(199, 56%, 35%) |
| OKLCH | oklch(49.9% 0.083 231.7) |
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 #276B8A | 5.90:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #276B8A | 3.55:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #276B8A text on white | 5.90:1 | AA | Lc 79.3 | Fine for body text |
| #276B8A text on black | 3.55:1 | AA large text | Lc -22.5 | 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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D6
oklch(80.9% 0.04 230.3)
-
Step 400
400
#77A8C2
oklch(70.6% 0.065 232)
-
Step 500
500
#5292B3
oklch(63% 0.082 232.6)
-
Step 600
600
#337C9E
oklch(55.5% 0.089 231.7)
-
Step 700
700 (this color)
#276B8A
oklch(49.9% 0.083 231.7)
-
Step 800
800
#20556E
oklch(42.6% 0.069 232.1)
-
Step 900
900
#204759
oklch(37.8% 0.054 230.4)
-
Step 950
950
#142934
oklch(26.9% 0.034 232.8)
#276B8A 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) | #5B6A8C | 0.055 |
| Deuteranopia (no green cones) | #4E608A | 0.048 |
| Tritanopia (no blue cones) | #007375 | 0.051 |
| Achromatopsia (no color) | #646464 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #276B8A
#276B8A
oklch(49.9% 0.083 231.7)
- #885534
#885534
oklch(50% 0.083 52.7)
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 #276B8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.028
- Denim #3B638C ΔE 0.029
- Peacock Blue #016795 ΔE 0.029
- Ocean Blue #03719C ΔE 0.030
- Muted Blue #3B719F ΔE 0.041
- Ocean #017B92 ΔE 0.046
- Metallic Blue #4F738E ΔE 0.048
- Deep Aqua #08787F ΔE 0.049
Use #276B8A 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.