#215BA4
Closest named color: Denim Blue (#3B5B92). oklch(47.4% 0.132 256.1), rgb(33, 91, 164).
Aa
White text reads best on this color (6.78:1).
About this color
#215BA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.132 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.036 away. White text reads best on it, at 6.78:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #215BA4 |
| RGB | rgb(33, 91, 164) |
| HSL | hsl(213, 66%, 39%) |
| OKLCH | oklch(47.4% 0.132 256.1) |
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 #215BA4 | 6.78:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #215BA4 | 3.09:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #215BA4 text on white | 6.78:1 | AA | Lc 83.0 | Fine for body text |
| #215BA4 text on black | 3.09:1 | AA large text | Lc -19.0 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBF1
oklch(88.6% 0.035 254.9)
-
Step 300
300
#A6C3EA
oklch(80.9% 0.064 255.9)
-
Step 400
400
#76A3E0
oklch(70.8% 0.102 256.2)
-
Step 500
500
#518BD7
oklch(63.2% 0.13 255.8)
-
Step 600
600
#3473C4
oklch(55.6% 0.142 256)
-
Step 700
700 (this color)
#215BA4
oklch(47.4% 0.132 256.1)
-
Step 800
800
#214F89
oklch(42.7% 0.109 255.7)
-
Step 900
900
#21426E
oklch(37.8% 0.085 256.3)
-
Step 950
950
#142740
oklch(27% 0.053 255.8)
#215BA4 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) | #3661A7 | 0.027 |
| Deuteranopia (no green cones) | #1B56A3 | 0.015 |
| Tritanopia (no blue cones) | #006C77 | 0.100 |
| Achromatopsia (no color) | #5B5B5B | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215BA4
#215BA4
oklch(47.4% 0.132 256.1)
- #7B5300
#7B5300
oklch(47.4% 0.099 76.6)
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 #215BA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.036
- Dusk Blue #26538D ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.046
- Mid Blue #276AB3 ΔE 0.047
- Peacock Blue #016795 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Denim #3B638C ΔE 0.055
- Light Navy #155084 ΔE 0.060
Use #215BA4 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.