#275DCD
Closest named color: Warm Blue (#4B57DB). oklch(51% 0.183 262.5), rgb(39, 93, 205).
Aa
White text reads best on this color (5.94:1).
About this color
#275DCD is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.183 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.043 away. White text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #275DCD |
| RGB | rgb(39, 93, 205) |
| HSL | hsl(220, 68%, 48%) |
| OKLCH | oklch(51% 0.183 262.5) |
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 #275DCD | 5.94:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #275DCD | 3.53:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #275DCD text on white | 5.94:1 | AA | Lc 79.1 | Fine for body text |
| #275DCD text on black | 3.53:1 | AA large text | Lc -22.7 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A2C1FB
oklch(80.9% 0.089 262.7)
-
Step 400
400
#709FF9
oklch(70.8% 0.142 262.4)
-
Step 500
500
#4A83F5
oklch(63% 0.181 262.4)
-
Step 600
600
#2E69E4
oklch(55.5% 0.197 262.6)
-
Step 700
700 (this color)
#275DCD
oklch(51% 0.183 262.5)
-
Step 800
800
#1D48A0
oklch(42.7% 0.151 262.4)
-
Step 900
900
#1D3D7F
oklch(37.6% 0.118 262.7)
-
Step 950
950
#11244A
oklch(26.8% 0.075 262.5)
#275DCD 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) | #006CD1 | 0.038 |
| Deuteranopia (no green cones) | #005DCB | 0.017 |
| Tritanopia (no blue cones) | #00798C | 0.142 |
| Achromatopsia (no color) | #646464 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #275DCD
#275DCD
oklch(51% 0.183 262.5)
- #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 #275DCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.043
- Azul #1D5DEC ΔE 0.048
- Royal Blue #4169E1 ΔE 0.051
- Mid Blue #276AB3 ΔE 0.057
- Neon Blue #4361EE ΔE 0.059
- Cerulean Blue #056EEE ΔE 0.063
- Blue Blue #2242C7 ΔE 0.065
- Iris #6258C4 ΔE 0.068
Use #275DCD 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.