#2B5ECA
Closest named color: Warm Blue (#4B57DB). oklch(51.1% 0.177 262.8), rgb(43, 94, 202).
Aa
White text reads best on this color (5.90:1).
About this color
#2B5ECA is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.177 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.044 away. White text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #2B5ECA |
| RGB | rgb(43, 94, 202) |
| HSL | hsl(221, 65%, 48%) |
| OKLCH | oklch(51.1% 0.177 262.8) |
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 #2B5ECA | 5.90:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #2B5ECA | 3.55:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #2B5ECA text on white | 5.90:1 | AA | Lc 79.0 | Fine for body text |
| #2B5ECA text on black | 3.55:1 | AA large text | Lc -22.8 | 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
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A3C1F9
oklch(80.9% 0.086 262.7)
-
Step 400
400
#729FF6
oklch(70.8% 0.137 262.6)
-
Step 500
500
#4E84F2
oklch(63.2% 0.175 262.8)
-
Step 600
600
#326AE1
oklch(55.6% 0.191 262.8)
-
Step 700
700 (this color)
#2B5ECA
oklch(51.1% 0.177 262.8)
-
Step 800
800
#20489E
oklch(42.7% 0.147 262.9)
-
Step 900
900
#1F3E7D
oklch(37.8% 0.113 262.6)
-
Step 950
950
#132549
oklch(27.1% 0.071 262.6)
#2B5ECA 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) | #026CCE | 0.036 |
| Deuteranopia (no green cones) | #005DC8 | 0.021 |
| Tritanopia (no blue cones) | #00788B | 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°).
- #2B5ECA
#2B5ECA
oklch(51.1% 0.177 262.8)
- #846000
#846000
oklch(51.3% 0.105 82.9)
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 #2B5ECA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.044
- Royal Blue #4169E1 ΔE 0.051
- Mid Blue #276AB3 ΔE 0.051
- Azul #1D5DEC ΔE 0.053
- Neon Blue #4361EE ΔE 0.062
- Iris #6258C4 ΔE 0.065
- Cerulean Blue #056EEE ΔE 0.065
- French Blue #436BAD ΔE 0.066
Use #2B5ECA 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.