#215BBC
Closest named color: Mid Blue (#276AB3). oklch(49.1% 0.165 260.2), rgb(33, 91, 188).
Aa
White text reads best on this color (6.38:1).
About this color
#215BBC is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.165 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.046 away. White text reads best on it, at 6.38:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.28:1 |
| White text | 6.38:1 |
Values
| HEX | #215BBC |
| RGB | rgb(33, 91, 188) |
| HSL | hsl(218, 70%, 43%) |
| OKLCH | oklch(49.1% 0.165 260.2) |
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 #215BBC | 6.38:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #215BBC | 3.28:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #215BBC text on white | 6.38:1 | AA | Lc 81.2 | Fine for body text |
| #215BBC text on black | 3.28:1 | AA large text | Lc -20.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A3C2F5
oklch(80.9% 0.08 260.3)
-
Step 400
400
#71A0F0
oklch(70.6% 0.128 260.6)
-
Step 500
500
#4B86EA
oklch(63% 0.163 260.3)
-
Step 600
600
#2E6ED9
oklch(55.7% 0.177 260.2)
-
Step 700
700 (this color)
#215BBC
oklch(49.1% 0.165 260.2)
-
Step 800
800
#1D4B98
oklch(42.7% 0.136 260.2)
-
Step 900
900
#1D3F79
oklch(37.6% 0.107 260.4)
-
Step 950
950
#122647
oklch(27.2% 0.067 259.9)
#215BBC 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) | #1866BF | 0.029 |
| Deuteranopia (no green cones) | #0058BA | 0.018 |
| Tritanopia (no blue cones) | #007383 | 0.127 |
| Achromatopsia (no color) | #5F5F5F | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215BBC
#215BBC
oklch(49.1% 0.165 260.2)
- #7E5900
#7E5900
oklch(49% 0.101 80.5)
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 #215BBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.046
- Blue Blue #2242C7 ΔE 0.062
- French Blue #436BAD ΔE 0.064
- Warm Blue #4B57DB ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.070
- Azul #1D5DEC ΔE 0.074
- Dusky Blue #475F94 ΔE 0.075
- Royal Blue #4169E1 ΔE 0.075
Use #215BBC 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.