#275EC9
Closest named color: Warm Blue (#4B57DB). oklch(50.9% 0.177 261.9), rgb(39, 94, 201).
Aa
White text reads best on this color (5.94:1).
About this color
#275EC9 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.177 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.047 away. White text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #275EC9 |
| RGB | rgb(39, 94, 201) |
| HSL | hsl(220, 68%, 47%) |
| OKLCH | oklch(50.9% 0.177 261.9) |
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 #275EC9 | 5.94:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #275EC9 | 3.53:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #275EC9 text on white | 5.94:1 | AA | Lc 79.2 | Fine for body text |
| #275EC9 text on black | 3.53:1 | AA large text | Lc -22.6 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A2C1F9
oklch(80.8% 0.087 262)
-
Step 400
400
#709FF5
oklch(70.6% 0.137 261.7)
-
Step 500
500
#4B84F2
oklch(63.1% 0.176 262)
-
Step 600
600
#2E6BE0
oklch(55.6% 0.19 261.7)
-
Step 700
700 (this color)
#275EC9
oklch(50.9% 0.177 261.9)
-
Step 800
800
#1D499D
oklch(42.7% 0.146 261.7)
-
Step 900
900
#1D3E7D
oklch(37.7% 0.114 261.8)
-
Step 950
950
#122549
oklch(27% 0.071 261.9)
#275EC9 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) | #046BCD | 0.033 |
| Deuteranopia (no green cones) | #005DC7 | 0.018 |
| Tritanopia (no blue cones) | #00788A | 0.137 |
| Achromatopsia (no color) | #646464 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #275EC9
#275EC9
oklch(50.9% 0.177 261.9)
- #845F00
#845F00
oklch(51.1% 0.105 82)
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 #275EC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.047
- Mid Blue #276AB3 ΔE 0.050
- Royal Blue #4169E1 ΔE 0.054
- Azul #1D5DEC ΔE 0.054
- Neon Blue #4361EE ΔE 0.064
- Cerulean Blue #056EEE ΔE 0.066
- French Blue #436BAD ΔE 0.066
- Blue Blue #2242C7 ΔE 0.067
Use #275EC9 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.