#2158CC
Closest named color: Warm Blue (#4B57DB). oklch(49.8% 0.189 262.6), rgb(33, 88, 204).
Aa
White text reads best on this color (6.30:1).
About this color
#2158CC is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.189 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.048 away. White text reads best on it, at 6.30:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.33:1 |
| White text | 6.30:1 |
Values
| HEX | #2158CC |
| RGB | rgb(33, 88, 204) |
| HSL | hsl(221, 72%, 46%) |
| OKLCH | oklch(49.8% 0.189 262.6) |
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 #2158CC | 6.30:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #2158CC | 3.33:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #2158CC text on white | 6.30:1 | AA | Lc 80.7 | Fine for body text |
| #2158CC text on black | 3.33:1 | AA large text | Lc -21.1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A1C1FC
oklch(80.9% 0.091 262.4)
-
Step 400
400
#6E9EFB
oklch(70.6% 0.146 262.6)
-
Step 500
500
#4883F9
oklch(63.2% 0.187 262.4)
-
Step 600
600
#2C68E8
oklch(55.5% 0.204 262.7)
-
Step 700
700 (this color)
#2158CC
oklch(49.8% 0.189 262.6)
-
Step 800
800
#1B47A3
oklch(42.7% 0.157 262.5)
-
Step 900
900
#1C3D81
oklch(37.7% 0.121 262.6)
-
Step 950
950
#11244C
oklch(27% 0.078 263.1)
#2158CC 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) | #0068D0 | 0.039 |
| Deuteranopia (no green cones) | #0058CA | 0.014 |
| Tritanopia (no blue cones) | #007589 | 0.146 |
| Achromatopsia (no color) | #606060 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2158CC
#2158CC
oklch(49.8% 0.189 262.6)
- #7F5C00
#7F5C00
oklch(49.8% 0.102 82.7)
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 #2158CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.048
- Azul #1D5DEC ΔE 0.051
- Blue Blue #2242C7 ΔE 0.051
- Royal Blue #4169E1 ΔE 0.063
- Mid Blue #276AB3 ΔE 0.065
- Neon Blue #4361EE ΔE 0.067
- Majorelle Blue #3F37C9 ΔE 0.071
- Cerulean Blue #056EEE ΔE 0.072
Use #2158CC 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.