#2552A8
Closest named color: Dusk Blue (#26538D). oklch(45.8% 0.147 261.7), rgb(37, 82, 168).
Aa
White text reads best on this color (7.36:1).
About this color
#2552A8 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.147 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.045 away. White text reads best on it, at 7.36:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #2552A8 |
| RGB | rgb(37, 82, 168) |
| HSL | hsl(219, 64%, 40%) |
| OKLCH | oklch(45.8% 0.147 261.7) |
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 #2552A8 | 7.36:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #2552A8 | 2.85:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #2552A8 text on white | 7.36:1 | AAA | Lc 85.1 | Fine for body text |
| #2552A8 text on black | 2.85:1 | Fails | Lc -16.9 | 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 800.
-
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
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A2C1F9
oklch(80.8% 0.087 262)
-
Step 400
400
#709FF6
oklch(70.7% 0.138 261.9)
-
Step 500
500
#4A84F2
oklch(63% 0.176 261.8)
-
Step 600
600
#2D6BE1
oklch(55.6% 0.191 261.7)
-
Step 700
700
#2058C3
oklch(49% 0.178 261.7)
-
Step 800
800 (this color)
#2552A8
oklch(45.8% 0.147 261.7)
-
Step 900
900
#1D3E7D
oklch(37.7% 0.114 261.8)
-
Step 950
950
#112549
oklch(27% 0.072 261.1)
#2552A8 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) | #1C5CAB | 0.027 |
| Deuteranopia (no green cones) | #0050A6 | 0.021 |
| Tritanopia (no blue cones) | #006775 | 0.115 |
| Achromatopsia (no color) | #565656 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2552A8
#2552A8
oklch(45.8% 0.147 261.7)
- #725100
#725100
oklch(45.8% 0.095 81.4)
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 #2552A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.045
- Cobalt #1E488F ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.053
- Blueberry #464196 ΔE 0.058
- Light Navy Blue #2E5A88 ΔE 0.061
- Light Navy #155084 ΔE 0.061
- Blue Blue #2242C7 ΔE 0.063
- Sapphire #2138AB ΔE 0.065
Use #2552A8 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.