#245371
Closest named color: Deep Sea Blue (#015482). oklch(42.4% 0.071 239.5), rgb(36, 83, 113).
Aa
White text reads best on this color (8.23:1).
About this color
#245371 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.071 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.031 away. White text reads best on it, at 8.23:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.55:1 |
| White text | 8.23:1 |
Values
| HEX | #245371 |
| RGB | rgb(36, 83, 113) |
| HSL | hsl(203, 52%, 29%) |
| OKLCH | oklch(42.4% 0.071 239.5) |
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 #245371 | 8.23:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #245371 | 2.55:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #245371 text on white | 8.23:1 | AAA | Lc 88.3 | Fine for body text |
| #245371 text on black | 2.55:1 | Fails | Lc -13.9 | 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
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A9C5D9
oklch(80.9% 0.041 239.1)
-
Step 400
400
#7AA7C6
oklch(70.7% 0.066 239)
-
Step 500
500
#5691B8
oklch(63.2% 0.085 239)
-
Step 600
600
#397AA4
oklch(55.6% 0.093 239.8)
-
Step 700
700
#2B678C
oklch(49.1% 0.086 239)
-
Step 800
800 (this color)
#245371
oklch(42.4% 0.071 239.5)
-
Step 900
900
#23455C
oklch(37.6% 0.056 240.1)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#245371 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) | #455372 | 0.038 |
| Deuteranopia (no green cones) | #3B4B70 | 0.033 |
| Tritanopia (no blue cones) | #005B5D | 0.052 |
| Achromatopsia (no color) | #4F4F4F | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #245371
#245371
oklch(42.4% 0.071 239.5)
- #6B4423
#6B4423
oklch(42.4% 0.072 59.3)
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 #245371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.031
- Light Navy #155084 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.043
- Petrol #005F6A ΔE 0.045
- Dusk Blue #26538D ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.048
- Deep Teal #00555A ΔE 0.048
Use #245371 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.