#215F9E
Closest named color: Denim Blue (#3B5B92). oklch(47.9% 0.119 252.1), rgb(33, 95, 158).
Aa
White text reads best on this color (6.57:1).
About this color
#215F9E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.119 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.028 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #215F9E |
| RGB | rgb(33, 95, 158) |
| HSL | hsl(210, 65%, 37%) |
| OKLCH | oklch(47.9% 0.119 252.1) |
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 #215F9E | 6.57:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #215F9E | 3.19:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #215F9E text on white | 6.57:1 | AA | Lc 82.2 | Fine for body text |
| #215F9E text on black | 3.19:1 | AA large text | Lc -19.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A6C4E6
oklch(81% 0.058 251.8)
-
Step 400
400
#76A4D9
oklch(70.6% 0.093 252.6)
-
Step 500
500
#518DCF
oklch(63.2% 0.118 252.2)
-
Step 600
600
#3376BC
oklch(55.7% 0.128 252)
-
Step 700
700 (this color)
#215F9E
oklch(47.9% 0.119 252.1)
-
Step 800
800
#205183
oklch(42.8% 0.098 251.6)
-
Step 900
900
#204369
oklch(37.6% 0.077 252.2)
-
Step 950
950
#14283E
oklch(27.2% 0.049 252.1)
#215F9E 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) | #4163A1 | 0.033 |
| Deuteranopia (no green cones) | #2D589D | 0.020 |
| Tritanopia (no blue cones) | #006E77 | 0.089 |
| Achromatopsia (no color) | #5D5D5D | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215F9E
#215F9E
oklch(47.9% 0.119 252.1)
- #805200
#805200
oklch(47.9% 0.102 72.2)
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 #215F9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.028
- Peacock Blue #016795 ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.039
- Dusk Blue #26538D ΔE 0.040
- Denim #3B638C ΔE 0.040
- Mid Blue #276AB3 ΔE 0.043
- Ocean Blue #03719C ΔE 0.053
Use #215F9E 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.