#2D63B8
Closest named color: Mid Blue (#276AB3). oklch(51% 0.146 259.3), rgb(45, 99, 184).
Aa
White text reads best on this color (5.85:1).
About this color
#2D63B8 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.146 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.022 away. White text reads best on it, at 5.85:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.58:1 |
| White text | 5.85:1 |
Values
| HEX | #2D63B8 |
| RGB | rgb(45, 99, 184) |
| HSL | hsl(217, 61%, 45%) |
| OKLCH | oklch(51% 0.146 259.3) |
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 #2D63B8 | 5.85:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #2D63B8 | 3.58:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #2D63B8 text on white | 5.85:1 | AA | Lc 78.9 | Fine for body text |
| #2D63B8 text on black | 3.58:1 | AA large text | Lc -22.9 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CADAF4
oklch(88.4% 0.04 260.1)
-
Step 300
300
#A6C2EF
oklch(80.9% 0.071 259.8)
-
Step 400
400
#75A1E7
oklch(70.6% 0.114 259.4)
-
Step 500
500
#5188E0
oklch(63% 0.145 259.4)
-
Step 600
600
#3570CD
oklch(55.5% 0.157 259.3)
-
Step 700
700 (this color)
#2D63B8
oklch(51% 0.146 259.3)
-
Step 800
800
#224D90
oklch(42.8% 0.121 259.1)
-
Step 900
900
#214073
oklch(37.6% 0.095 259.8)
-
Step 950
950
#142643
oklch(27% 0.059 259.5)
#2D63B8 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) | #366CBB | 0.027 |
| Deuteranopia (no green cones) | #155FB6 | 0.021 |
| Tritanopia (no blue cones) | #007784 | 0.114 |
| Achromatopsia (no color) | #656565 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D63B8
#2D63B8
oklch(51% 0.146 259.3)
- #865D00
#865D00
oklch(50.9% 0.106 78.7)
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 #2D63B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.022
- French Blue #436BAD ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.059
- Windows Blue #3778BF ΔE 0.060
- Dusky Blue #475F94 ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.061
- Muted Blue #3B719F ΔE 0.064
- Peacock Blue #016795 ΔE 0.064
Use #2D63B8 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.