#2153B5
Closest named color: Blue Blue (#2242C7). oklch(46.9% 0.165 261.9), rgb(33, 83, 181).
Aa
White text reads best on this color (7.07:1).
About this color
#2153B5 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.165 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.049 away. White text reads best on it, at 7.07:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #2153B5 |
| RGB | rgb(33, 83, 181) |
| HSL | hsl(220, 69%, 42%) |
| OKLCH | oklch(46.9% 0.165 261.9) |
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 #2153B5 | 7.07:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #2153B5 | 2.96:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #2153B5 text on white | 7.07:1 | AAA | Lc 84.0 | Fine for body text |
| #2153B5 text on black | 2.96:1 | Fails | Lc -18.0 | 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
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A5C1F5
oklch(80.9% 0.08 262.6)
-
Step 400
400
#74A0F0
oklch(70.8% 0.127 261.7)
-
Step 500
500
#5085EB
oklch(63% 0.164 262.1)
-
Step 600
600
#356CD9
oklch(55.5% 0.177 262.2)
-
Step 700
700 (this color)
#2153B5
oklch(46.9% 0.165 261.9)
-
Step 800
800
#224A98
oklch(42.7% 0.136 262)
-
Step 900
900
#203F79
oklch(37.8% 0.106 261.6)
-
Step 950
950
#132547
oklch(26.9% 0.068 261.9)
#2153B5 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) | #005FB8 | 0.031 |
| Deuteranopia (no green cones) | #0052B3 | 0.016 |
| Tritanopia (no blue cones) | #006B7C | 0.127 |
| Achromatopsia (no color) | #585858 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2153B5
#2153B5
oklch(46.9% 0.165 261.9)
- #755400
#755400
oklch(46.9% 0.097 82.2)
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 #2153B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.049
- Mid Blue #276AB3 ΔE 0.064
- Dusk Blue #26538D ΔE 0.065
- Cobalt #1E488F ΔE 0.067
- Sapphire #2138AB ΔE 0.067
- Denim Blue #3B5B92 ΔE 0.068
- Majorelle Blue #3F37C9 ΔE 0.070
- Blueberry #464196 ΔE 0.072
Use #2153B5 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.