#0F536F
Closest named color: Deep Sea Blue (#015482). oklch(41.6% 0.078 231.6), rgb(15, 83, 111).
Aa
White text reads best on this color (8.44:1).
About this color
#0F536F is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.078 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.032 away. White text reads best on it, at 8.44:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.48:1 |
| White text | 8.44:1 |
Values
| HEX | #0F536F |
| RGB | rgb(15, 83, 111) |
| HSL | hsl(197, 76%, 25%) |
| OKLCH | oklch(41.6% 0.078 231.6) |
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 #0F536F | 8.44:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #0F536F | 2.48:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #0F536F text on white | 8.44:1 | AAA | Lc 88.7 | Fine for body text |
| #0F536F text on black | 2.48:1 | Fails | Lc -13.5 | 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
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A4C7D9
oklch(81% 0.045 230.4)
-
Step 400
400
#70A9C6
oklch(70.6% 0.073 231.3)
-
Step 500
500
#4793B8
oklch(63% 0.093 232)
-
Step 600
600
#217DA4
oklch(55.6% 0.102 231.6)
-
Step 700
700
#11698D
oklch(49% 0.095 232.3)
-
Step 800
800 (this color)
#0F536F
oklch(41.6% 0.078 231.6)
-
Step 900
900
#19475C
oklch(37.7% 0.061 231.4)
-
Step 950
950
#102A36
oklch(27.1% 0.039 230.5)
#0F536F 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) | #455270 | 0.052 |
| Deuteranopia (no green cones) | #38496F | 0.044 |
| Tritanopia (no blue cones) | #005B5C | 0.048 |
| Achromatopsia (no color) | #4D4D4D | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F536F
#0F536F
oklch(41.6% 0.078 231.6)
- #6D3F21
#6D3F21
oklch(41.7% 0.078 52.1)
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 #0F536F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.032
- Light Navy #155084 ΔE 0.039
- Deep Teal #00555A ΔE 0.040
- Petrol #005F6A ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.052
- Charcoal #264653 ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.054
Use #0F536F 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.