#215271
Closest named color: Deep Sea Blue (#015482). oklch(42% 0.074 239.7), rgb(33, 82, 113).
Aa
White text reads best on this color (8.36:1).
About this color
#215271 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.074 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 8.36:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.51:1 |
| White text | 8.36:1 |
Values
| HEX | #215271 |
| RGB | rgb(33, 82, 113) |
| HSL | hsl(203, 55%, 29%) |
| OKLCH | oklch(42% 0.074 239.7) |
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 #215271 | 8.36:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #215271 | 2.51:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #215271 text on white | 8.36:1 | AAA | Lc 88.6 | Fine for body text |
| #215271 text on black | 2.51:1 | Fails | Lc -13.6 | Not readable |
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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE8
oklch(88.6% 0.024 240.1)
-
Step 300
300
#A8C5DA
oklch(80.9% 0.043 239.6)
-
Step 400
400
#79A7C7
oklch(70.7% 0.068 239.3)
-
Step 500
500
#5491B9
oklch(63.2% 0.088 239)
-
Step 600
600
#377AA5
oklch(55.5% 0.095 239.8)
-
Step 700
700
#28678E
oklch(49.1% 0.089 239.5)
-
Step 800
800 (this color)
#215271
oklch(42% 0.074 239.7)
-
Step 900
900
#22465D
oklch(37.8% 0.057 238.8)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#215271 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) | #445272 | 0.040 |
| Deuteranopia (no green cones) | #394A70 | 0.033 |
| Tritanopia (no blue cones) | #005A5D | 0.051 |
| Achromatopsia (no color) | #4E4E4E | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215271
#215271
oklch(42% 0.074 239.7)
- #6A4320
#6A4320
oklch(42.1% 0.073 60.5)
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 #215271, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Light Navy #155084 ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.046
- YInMn Blue #415A77 ΔE 0.046
- Petrol #005F6A ΔE 0.047
- Dusk Blue #26538D ΔE 0.048
- Deep Teal #00555A ΔE 0.048
Use #215271 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.