#2553BE
Closest named color: Blue Blue (#2242C7). oklch(47.7% 0.176 263.5), rgb(37, 83, 190).
Aa
White text reads best on this color (6.86:1).
About this color
#2553BE is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.176 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.042 away. White text reads best on it, at 6.86:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.05:1 |
| White text | 6.86:1 |
Values
| HEX | #2553BE |
| RGB | rgb(37, 83, 190) |
| HSL | hsl(222, 67%, 45%) |
| OKLCH | oklch(47.7% 0.176 263.5) |
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 #2553BE | 6.86:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #2553BE | 3.05:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #2553BE text on white | 6.86:1 | AA | Lc 83.1 | Fine for body text |
| #2553BE text on black | 3.05:1 | AA large text | Lc -18.8 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A4C1F8
oklch(80.9% 0.084 263)
-
Step 400
400
#749EF5
oklch(70.6% 0.136 263.7)
-
Step 500
500
#5083F1
oklch(63% 0.174 263.5)
-
Step 600
600
#366AE0
oklch(55.7% 0.189 263.5)
-
Step 700
700 (this color)
#2553BE
oklch(47.7% 0.176 263.5)
-
Step 800
800
#23489D
oklch(42.7% 0.145 263.7)
-
Step 900
900
#213D7D
oklch(37.6% 0.114 264)
-
Step 950
950
#132449
oklch(26.8% 0.072 263.7)
#2553BE 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) | #0062C2 | 0.038 |
| Deuteranopia (no green cones) | #0054BC | 0.017 |
| Tritanopia (no blue cones) | #006E80 | 0.138 |
| Achromatopsia (no color) | #5A5A5A | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2553BE
#2553BE
oklch(47.7% 0.176 263.5)
- #775700
#775700
oklch(47.8% 0.098 83.7)
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 #2553BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.042
- Majorelle Blue #3F37C9 ΔE 0.063
- Warm Blue #4B57DB ΔE 0.063
- Mid Blue #276AB3 ΔE 0.066
- Blue With A Hint Of Purple #533CC6 ΔE 0.069
- Sapphire #2138AB ΔE 0.072
- Azul #1D5DEC ΔE 0.075
- Blurple #5539CC ΔE 0.076
Use #2553BE 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.