#2B5FCC
Closest named color: Warm Blue (#4B57DB). oklch(51.5% 0.179 262.7), rgb(43, 95, 204).
Aa
White text reads best on this color (5.81:1).
About this color
#2B5FCC is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.179 and its hue 263°. 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 5.81:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.179) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #2B5FCC |
| RGB | rgb(43, 95, 204) |
| HSL | hsl(221, 65%, 48%) |
| OKLCH | oklch(51.5% 0.179 262.7) |
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 #2B5FCC | 5.81:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #2B5FCC | 3.61:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #2B5FCC text on white | 5.81:1 | AA | Lc 78.6 | Fine for body text |
| #2B5FCC text on black | 3.61:1 | AA large text | Lc -23.2 | 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
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A3C1F9
oklch(80.9% 0.086 262.7)
-
Step 400
400
#719FF6
oklch(70.7% 0.138 262.3)
-
Step 500
500
#4D84F3
oklch(63.2% 0.176 262.6)
-
Step 600
600
#316AE1
oklch(55.6% 0.191 262.6)
-
Step 700
700 (this color)
#2B5FCC
oklch(51.5% 0.179 262.7)
-
Step 800
800
#1F489E
oklch(42.6% 0.148 262.7)
-
Step 900
900
#1E3E7E
oklch(37.8% 0.115 262.3)
-
Step 950
950
#12254A
oklch(27.1% 0.073 262.2)
#2B5FCC 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) | #016DD0 | 0.036 |
| Deuteranopia (no green cones) | #005ECA | 0.020 |
| Tritanopia (no blue cones) | #007A8C | 0.140 |
| Achromatopsia (no color) | #656565 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5FCC
#2B5FCC
oklch(51.5% 0.179 262.7)
- #856100
#856100
oklch(51.6% 0.106 83.1)
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 #2B5FCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.043
- Royal Blue #4169E1 ΔE 0.047
- Azul #1D5DEC ΔE 0.050
- Mid Blue #276AB3 ΔE 0.052
- Neon Blue #4361EE ΔE 0.058
- Cerulean Blue #056EEE ΔE 0.061
- Iris #6258C4 ΔE 0.065
- French Blue #436BAD ΔE 0.067
Use #2B5FCC 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.