#2B63B0
Closest named color: Mid Blue (#276AB3). oklch(50.3% 0.136 257.2), rgb(43, 99, 176).
Aa
White text reads best on this color (5.97:1).
About this color
#2B63B0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.136 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.019 away. White text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.51:1 |
| White text | 5.97:1 |
Values
| HEX | #2B63B0 |
| RGB | rgb(43, 99, 176) |
| HSL | hsl(215, 61%, 43%) |
| OKLCH | oklch(50.3% 0.136 257.2) |
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 #2B63B0 | 5.97:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #2B63B0 | 3.51:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #2B63B0 text on white | 5.97:1 | AA | Lc 79.5 | Fine for body text |
| #2B63B0 text on black | 3.51:1 | AA large text | Lc -22.3 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A6C3EB
oklch(80.9% 0.065 256.5)
-
Step 400
400
#76A2E2
oklch(70.6% 0.106 257.7)
-
Step 500
500
#528AD9
oklch(63.1% 0.134 257.2)
-
Step 600
600
#3572C7
oklch(55.6% 0.146 257.4)
-
Step 700
700 (this color)
#2B63B0
oklch(50.3% 0.136 257.2)
-
Step 800
800
#224E8B
oklch(42.7% 0.112 257.3)
-
Step 900
900
#21416F
oklch(37.6% 0.088 257.6)
-
Step 950
950
#142741
oklch(27.1% 0.055 256.6)
#2B63B0 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) | #3D6AB3 | 0.028 |
| Deuteranopia (no green cones) | #245EAE | 0.016 |
| Tritanopia (no blue cones) | #007581 | 0.105 |
| Achromatopsia (no color) | #636363 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B63B0
#2B63B0
oklch(50.3% 0.136 257.2)
- #855B00
#855B00
oklch(50.3% 0.105 77.5)
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 #2B63B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.019
- French Blue #436BAD ΔE 0.035
- Dusky Blue #475F94 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.050
- Peacock Blue #016795 ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.054
- Muted Blue #3B719F ΔE 0.056
- Ocean Blue #03719C ΔE 0.058
Use #2B63B0 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.