#275BAE
Closest named color: Mid Blue (#276AB3). oklch(48.3% 0.144 259.5), rgb(39, 91, 174).
Aa
White text reads best on this color (6.57:1).
About this color
#275BAE is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.144 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.042 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #275BAE |
| RGB | rgb(39, 91, 174) |
| HSL | hsl(217, 63%, 42%) |
| OKLCH | oklch(48.3% 0.144 259.5) |
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 #275BAE | 6.57:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #275BAE | 3.19:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #275BAE text on white | 6.57:1 | AA | Lc 82.1 | Fine for body text |
| #275BAE text on black | 3.19:1 | AA large text | Lc -19.8 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CADAF3
oklch(88.4% 0.039 259.3)
-
Step 300
300
#A6C2EE
oklch(80.9% 0.07 259.3)
-
Step 400
400
#76A1E6
oklch(70.6% 0.112 259.6)
-
Step 500
500
#5388DE
oklch(63% 0.142 259.6)
-
Step 600
600
#3770CC
oklch(55.5% 0.155 259.6)
-
Step 700
700 (this color)
#275BAE
oklch(48.3% 0.144 259.5)
-
Step 800
800
#234D8F
oklch(42.7% 0.119 259.2)
-
Step 900
900
#224172
oklch(37.8% 0.092 259.2)
-
Step 950
950
#142643
oklch(27% 0.059 259.5)
#275BAE 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) | #2D64B1 | 0.026 |
| Deuteranopia (no green cones) | #0357AC | 0.023 |
| Tritanopia (no blue cones) | #006F7C | 0.112 |
| Achromatopsia (no color) | #5D5D5D | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #275BAE
#275BAE
oklch(48.3% 0.144 259.5)
- #7C5700
#7C5700
oklch(48.4% 0.1 80)
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 #275BAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.048
- Dusky Blue #475F94 ΔE 0.055
- Dusk Blue #26538D ΔE 0.055
- French Blue #436BAD ΔE 0.056
- Peacock Blue #016795 ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.061
- Denim #3B638C ΔE 0.066
Use #275BAE 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.