#2552BC
Closest named color: Blue Blue (#2242C7). oklch(47.4% 0.175 263.7), rgb(37, 82, 188).
Aa
White text reads best on this color (6.97:1).
About this color
#2552BC is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.175 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.041 away. White text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.01:1 |
| White text | 6.97:1 |
Values
| HEX | #2552BC |
| RGB | rgb(37, 82, 188) |
| HSL | hsl(222, 67%, 44%) |
| OKLCH | oklch(47.4% 0.175 263.7) |
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 #2552BC | 6.97:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #2552BC | 3.01:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #2552BC text on white | 6.97:1 | AA | Lc 83.6 | Fine for body text |
| #2552BC text on black | 3.01:1 | AA large text | Lc -18.4 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A5C1F8
oklch(81% 0.084 263.6)
-
Step 400
400
#749EF5
oklch(70.6% 0.136 263.7)
-
Step 500
500
#5183F1
oklch(63% 0.174 263.8)
-
Step 600
600
#376ADF
oklch(55.6% 0.187 263.7)
-
Step 700
700 (this color)
#2552BC
oklch(47.4% 0.175 263.7)
-
Step 800
800
#23489D
oklch(42.7% 0.145 263.7)
-
Step 900
900
#213D7D
oklch(37.6% 0.114 264)
-
Step 950
950
#142449
oklch(26.9% 0.072 264.5)
#2552BC 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) | #0061C0 | 0.038 |
| Deuteranopia (no green cones) | #0053BA | 0.017 |
| Tritanopia (no blue cones) | #006C7F | 0.134 |
| Achromatopsia (no color) | #595959 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2552BC
#2552BC
oklch(47.4% 0.175 263.7)
- #765600
#765600
oklch(47.4% 0.097 83.5)
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 #2552BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.041
- Majorelle Blue #3F37C9 ΔE 0.062
- Warm Blue #4B57DB ΔE 0.067
- Mid Blue #276AB3 ΔE 0.068
- Sapphire #2138AB ΔE 0.069
- Blue With A Hint Of Purple #533CC6 ΔE 0.069
- Blurple #5539CC ΔE 0.076
- Dusk Blue #26538D ΔE 0.076
Use #2552BC 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.