#215A9B
Closest named color: Dusk Blue (#26538D). oklch(46.5% 0.121 254.2), rgb(33, 90, 155).
Aa
White text reads best on this color (6.99:1).
About this color
#215A9B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.121 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.028 away. White text reads best on it, at 6.99:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #215A9B |
| RGB | rgb(33, 90, 155) |
| HSL | hsl(212, 65%, 37%) |
| OKLCH | oklch(46.5% 0.121 254.2) |
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 #215A9B | 6.99:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #215A9B | 3.00:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #215A9B text on white | 6.99:1 | AA | Lc 83.9 | Fine for body text |
| #215A9B text on black | 3.00:1 | AA large text | Lc -18.1 | 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
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A7C3E6
oklch(80.8% 0.058 254.2)
-
Step 400
400
#78A4DA
oklch(70.8% 0.093 254)
-
Step 500
500
#548CD0
oklch(63.2% 0.119 254.2)
-
Step 600
600
#3775BD
oklch(55.7% 0.129 254)
-
Step 700
700 (this color)
#215A9B
oklch(46.5% 0.121 254.2)
-
Step 800
800
#235084
oklch(42.7% 0.1 253.9)
-
Step 900
900
#22436A
oklch(37.8% 0.078 253.9)
-
Step 950
950
#15273E
oklch(27% 0.049 255.2)
#215A9B 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) | #3A5F9E | 0.029 |
| Deuteranopia (no green cones) | #25549A | 0.017 |
| Tritanopia (no blue cones) | #006973 | 0.090 |
| Achromatopsia (no color) | #595959 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215A9B
#215A9B
oklch(46.5% 0.121 254.2)
- #7A5000
#7A5000
oklch(46.7% 0.099 74.3)
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 #215A9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.032
- Peacock Blue #016795 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.044
- Light Navy #155084 ΔE 0.047
- Denim #3B638C ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.048
Use #215A9B 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.