#215570
Closest named color: Deep Sea Blue (#015482). oklch(42.7% 0.071 234.6), rgb(33, 85, 112).
Aa
White text reads best on this color (8.08:1).
About this color
#215570 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.071 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.034 away. White text reads best on it, at 8.08:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.59:1 |
| White text | 8.08:1 |
Values
| HEX | #215570 |
| RGB | rgb(33, 85, 112) |
| HSL | hsl(201, 54%, 28%) |
| OKLCH | oklch(42.7% 0.071 234.6) |
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 #215570 | 8.08:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #215570 | 2.59:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #215570 text on white | 8.08:1 | AAA | Lc 87.8 | Fine for body text |
| #215570 text on black | 2.59:1 | Fails | Lc -14.4 | 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
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A8C6D8
oklch(81% 0.041 234.4)
-
Step 400
400
#77A8C4
oklch(70.7% 0.066 234)
-
Step 500
500
#5292B5
oklch(63.1% 0.084 234.2)
-
Step 600
600
#347CA1
oklch(55.7% 0.091 234.2)
-
Step 700
700
#25688A
oklch(49.1% 0.086 234.7)
-
Step 800
800 (this color)
#215570
oklch(42.7% 0.071 234.6)
-
Step 900
900
#21465B
oklch(37.7% 0.056 235.7)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#215570 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) | #485471 | 0.044 |
| Deuteranopia (no green cones) | #3D4C70 | 0.038 |
| Tritanopia (no blue cones) | #005C5E | 0.046 |
| Achromatopsia (no color) | #505050 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215570
#215570
oklch(42.7% 0.071 234.6)
- #6D4427
#6D4427
oklch(42.8% 0.071 54.8)
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 #215570, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.034
- Petrol #005F6A ΔE 0.038
- YInMn Blue #415A77 ΔE 0.041
- Light Navy #155084 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.043
- Deep Teal #00555A ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.051
- Dusk Blue #26538D ΔE 0.051
Use #215570 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.