#2B75EA
Closest named color: Cerulean Blue (#056EEE). oklch(58.3% 0.192 259.6), rgb(43, 117, 234).
Aa
Black text reads best on this color (4.83:1).
About this color
#2B75EA is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.192 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.026 away. Black text reads best on it, at 4.83:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.83:1 |
| White text | 4.34:1 |
Values
| HEX | #2B75EA |
| RGB | rgb(43, 117, 234) |
| HSL | hsl(217, 82%, 54%) |
| OKLCH | oklch(58.3% 0.192 259.6) |
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 #2B75EA | 4.34:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #2B75EA | 4.83:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #2B75EA text on white | 4.34:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #2B75EA text on black | 4.83:1 | AA | Lc -32.2 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DAF9
oklch(88.4% 0.048 260.2)
-
Step 300
300
#A0C2F9
oklch(80.9% 0.087 259.9)
-
Step 400
400
#6BA0F6
oklch(70.6% 0.139 259.7)
-
Step 500
500
#4386F2
oklch(63.2% 0.176 259.6)
-
Step 600
600 (this color)
#2B75EA
oklch(58.3% 0.192 259.6)
-
Step 700
700
#145AC3
oklch(49.2% 0.178 259.5)
-
Step 800
800
#144A9E
oklch(42.7% 0.148 259.6)
-
Step 900
900
#183F7D
oklch(37.7% 0.114 259.5)
-
Step 950
950
#0F2549
oklch(26.9% 0.073 259.8)
#2B75EA 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) | #2982EE | 0.033 |
| Deuteranopia (no green cones) | #0071E8 | 0.020 |
| Tritanopia (no blue cones) | #0091A4 | 0.147 |
| Achromatopsia (no color) | #797979 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B75EA
#2B75EA
oklch(58.3% 0.192 259.6)
- #A17100
#A17100
oklch(58.3% 0.121 79.1)
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 #2B75EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.026
- Clear Blue #247AFD ΔE 0.030
- Royal Blue #4169E1 ΔE 0.033
- Neon Blue #4361EE ΔE 0.049
- Bright Blue #0165FC ΔE 0.053
- Azul #1D5DEC ΔE 0.061
- Cornflower #6A79F7 ΔE 0.067
- Windows Blue #3778BF ΔE 0.068
Use #2B75EA 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.