#2B5BCD
Closest named color: Warm Blue (#4B57DB). oklch(50.8% 0.185 263.8), rgb(43, 91, 205).
Aa
White text reads best on this color (6.03:1).
About this color
#2B5BCD is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.185 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.040 away. White text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.48:1 |
| White text | 6.03:1 |
Values
| HEX | #2B5BCD |
| RGB | rgb(43, 91, 205) |
| HSL | hsl(222, 65%, 49%) |
| OKLCH | oklch(50.8% 0.185 263.8) |
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 #2B5BCD | 6.03:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #2B5BCD | 3.48:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #2B5BCD text on white | 6.03:1 | AA | Lc 79.6 | Fine for body text |
| #2B5BCD text on black | 3.48:1 | AA large text | Lc -22.2 | 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
#C9DAFB
oklch(88.6% 0.049 263.7)
-
Step 300
300
#A3C1FB
oklch(81% 0.089 263.3)
-
Step 400
400
#729EF9
oklch(70.7% 0.142 263.6)
-
Step 500
500
#4E82F6
oklch(63% 0.182 263.8)
-
Step 600
600
#3368E5
oklch(55.5% 0.198 263.8)
-
Step 700
700 (this color)
#2B5BCD
oklch(50.8% 0.185 263.8)
-
Step 800
800
#2147A1
oklch(42.7% 0.153 263.8)
-
Step 900
900
#1F3D80
oklch(37.8% 0.119 263.6)
-
Step 950
950
#13244B
oklch(27% 0.076 264.2)
#2B5BCD 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) | #006BD1 | 0.040 |
| Deuteranopia (no green cones) | #005CCB | 0.020 |
| Tritanopia (no blue cones) | #00778B | 0.143 |
| Achromatopsia (no color) | #636363 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5BCD
#2B5BCD
oklch(50.8% 0.185 263.8)
- #825F00
#825F00
oklch(50.8% 0.104 83.4)
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 #2B5BCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.040
- Azul #1D5DEC ΔE 0.048
- Royal Blue #4169E1 ΔE 0.053
- Neon Blue #4361EE ΔE 0.059
- Mid Blue #276AB3 ΔE 0.060
- Blue Blue #2242C7 ΔE 0.061
- Cerulean Blue #056EEE ΔE 0.066
- Iris #6258C4 ΔE 0.066
Use #2B5BCD 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.