#275AA9
Closest named color: Denim Blue (#3B5B92). oklch(47.7% 0.138 259.1), rgb(39, 90, 169).
Aa
White text reads best on this color (6.72:1).
About this color
#275AA9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.138 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.041 away. White text reads best on it, at 6.72:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #275AA9 |
| RGB | rgb(39, 90, 169) |
| HSL | hsl(216, 63%, 41%) |
| OKLCH | oklch(47.7% 0.138 259.1) |
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 #275AA9 | 6.72:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #275AA9 | 3.12:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #275AA9 text on white | 6.72:1 | AA | Lc 82.8 | Fine for body text |
| #275AA9 text on black | 3.12:1 | AA large text | Lc -19.1 | 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
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A7C2EC
oklch(80.8% 0.067 259.1)
-
Step 400
400
#78A2E3
oklch(70.8% 0.106 258.9)
-
Step 500
500
#5489DB
oklch(63.1% 0.137 258.8)
-
Step 600
600
#3971C9
oklch(55.6% 0.149 259.2)
-
Step 700
700 (this color)
#275AA9
oklch(47.7% 0.138 259.1)
-
Step 800
800
#254D8D
oklch(42.7% 0.115 259.4)
-
Step 900
900
#234170
oklch(37.7% 0.088 259.1)
-
Step 950
950
#152642
oklch(27% 0.057 259.9)
#275AA9 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) | #3062AC | 0.025 |
| Deuteranopia (no green cones) | #1056A7 | 0.020 |
| Tritanopia (no blue cones) | #006D79 | 0.108 |
| Achromatopsia (no color) | #5C5C5C | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #275AA9
#275AA9
oklch(47.7% 0.138 259.1)
- #7A5500
#7A5500
oklch(47.7% 0.099 79.4)
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 #275AA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.041
- Mid Blue #276AB3 ΔE 0.045
- Dusk Blue #26538D ΔE 0.047
- Dusky Blue #475F94 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.054
- Peacock Blue #016795 ΔE 0.055
- French Blue #436BAD ΔE 0.058
- Denim #3B638C ΔE 0.061
Use #275AA9 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.