#215BC9
Closest named color: Warm Blue (#4B57DB). oklch(50.1% 0.182 261.6), rgb(33, 91, 201).
Aa
White text reads best on this color (6.16:1).
About this color
#215BC9 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.182 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.050 away. White text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #215BC9 |
| RGB | rgb(33, 91, 201) |
| HSL | hsl(219, 72%, 46%) |
| OKLCH | oklch(50.1% 0.182 261.6) |
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 #215BC9 | 6.16:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #215BC9 | 3.40:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #215BC9 text on white | 6.16:1 | AA | Lc 80.2 | Fine for body text |
| #215BC9 text on black | 3.40:1 | AA large text | Lc -21.7 | 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
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A1C1FA
oklch(80.8% 0.088 261.8)
-
Step 400
400
#6E9FF8
oklch(70.7% 0.141 261.6)
-
Step 500
500
#4884F4
oklch(63.1% 0.179 261.6)
-
Step 600
600
#2B6AE3
oklch(55.5% 0.195 261.7)
-
Step 700
700 (this color)
#215BC9
oklch(50.1% 0.182 261.6)
-
Step 800
800
#1B48A0
oklch(42.6% 0.151 261.9)
-
Step 900
900
#1B3E7F
oklch(37.8% 0.118 261.4)
-
Step 950
950
#11254A
oklch(27.1% 0.074 261.5)
#215BC9 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) | #0069CD | 0.035 |
| Deuteranopia (no green cones) | #005AC7 | 0.014 |
| Tritanopia (no blue cones) | #007689 | 0.139 |
| Achromatopsia (no color) | #616161 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215BC9
#215BC9
oklch(50.1% 0.182 261.6)
- #815C00
#815C00
oklch(50.1% 0.103 81.2)
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 #215BC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.050
- Azul #1D5DEC ΔE 0.054
- Mid Blue #276AB3 ΔE 0.057
- Blue Blue #2242C7 ΔE 0.058
- Royal Blue #4169E1 ΔE 0.061
- Neon Blue #4361EE ΔE 0.068
- Cerulean Blue #056EEE ΔE 0.071
- Iris #6258C4 ΔE 0.073
Use #215BC9 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.