#2D55CB
Closest named color: Warm Blue (#4B57DB). oklch(49.5% 0.189 265.5), rgb(45, 85, 203).
Aa
White text reads best on this color (6.41:1).
About this color
#2D55CB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.189 and its hue 266°. 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 6.41:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #2D55CB |
| RGB | rgb(45, 85, 203) |
| HSL | hsl(225, 64%, 49%) |
| OKLCH | oklch(49.5% 0.189 265.5) |
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 #2D55CB | 6.41:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #2D55CB | 3.27:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #2D55CB text on white | 6.41:1 | AA | Lc 81.3 | Fine for body text |
| #2D55CB text on black | 3.27:1 | AA large text | Lc -20.6 | 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A4C0FC
oklch(80.9% 0.091 265)
-
Step 400
400
#759DFB
oklch(70.8% 0.145 265.4)
-
Step 500
500
#5280F9
oklch(63% 0.188 265.6)
-
Step 600
600
#3966E8
oklch(55.6% 0.203 265.6)
-
Step 700
700 (this color)
#2D55CB
oklch(49.5% 0.189 265.5)
-
Step 800
800
#2545A3
oklch(42.6% 0.157 265.7)
-
Step 900
900
#223C81
oklch(37.8% 0.121 265.4)
-
Step 950
950
#14244C
oklch(27.1% 0.077 265.2)
#2D55CB 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) | #0066CF | 0.042 |
| Deuteranopia (no green cones) | #0058C9 | 0.022 |
| Tritanopia (no blue cones) | #007388 | 0.148 |
| Achromatopsia (no color) | #5F5F5F | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D55CB
#2D55CB
oklch(49.5% 0.189 265.5)
- #7C5C00
#7C5C00
oklch(49.4% 0.101 84.9)
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 #2D55CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.043
- Blue Blue #2242C7 ΔE 0.047
- Azul #1D5DEC ΔE 0.054
- Majorelle Blue #3F37C9 ΔE 0.062
- Royal Blue #4169E1 ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.065
- Neon Blue #4361EE ΔE 0.067
- Iris #6258C4 ΔE 0.069
Use #2D55CB 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.