#215EC9
Closest named color: Warm Blue (#4B57DB). oklch(50.8% 0.178 260.8), rgb(33, 94, 201).
Aa
White text reads best on this color (5.98:1).
About this color
#215EC9 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.178 and its hue 261°. 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 5.98:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.50:1 |
| White text | 5.98:1 |
Values
| HEX | #215EC9 |
| RGB | rgb(33, 94, 201) |
| HSL | hsl(218, 72%, 46%) |
| OKLCH | oklch(50.8% 0.178 260.8) |
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 #215EC9 | 5.98:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #215EC9 | 3.50:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #215EC9 text on white | 5.98:1 | AA | Lc 79.3 | Fine for body text |
| #215EC9 text on black | 3.50:1 | AA large text | Lc -22.5 | 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
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A1C2F9
oklch(81% 0.086 260.5)
-
Step 400
400
#6EA0F6
oklch(70.8% 0.138 260.7)
-
Step 500
500
#4785F2
oklch(63.1% 0.176 260.8)
-
Step 600
600
#296BE1
oklch(55.5% 0.192 261)
-
Step 700
700 (this color)
#215EC9
oklch(50.8% 0.178 260.8)
-
Step 800
800
#19499E
oklch(42.6% 0.148 260.9)
-
Step 900
900
#1B3E7D
oklch(37.6% 0.115 261)
-
Step 950
950
#102549
oklch(26.9% 0.072 260.4)
#215EC9 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) | #026BCD | 0.033 |
| Deuteranopia (no green cones) | #005CC7 | 0.015 |
| Tritanopia (no blue cones) | #00788A | 0.136 |
| Achromatopsia (no color) | #636363 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215EC9
#215EC9
oklch(50.8% 0.178 260.8)
- #845E00
#845E00
oklch(50.8% 0.105 81)
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 #215EC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.050
- Mid Blue #276AB3 ΔE 0.051
- Azul #1D5DEC ΔE 0.054
- Royal Blue #4169E1 ΔE 0.056
- Blue Blue #2242C7 ΔE 0.066
- Neon Blue #4361EE ΔE 0.066
- Cerulean Blue #056EEE ΔE 0.067
- French Blue #436BAD ΔE 0.068
Use #215EC9 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.