#0F1734
Closest named color: Rich Black (#0D1B2A). oklch(21.5% 0.058 269.5), rgb(15, 23, 52).
Aa
White text reads best on this color (17.61:1).
About this color
#0F1734 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.058 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.027 away. White text reads best on it, at 17.61:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.61:1 |
Values
| HEX | #0F1734 |
| RGB | rgb(15, 23, 52) |
| HSL | hsl(227, 55%, 13%) |
| OKLCH | oklch(21.5% 0.058 269.5) |
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 #0F1734 | 17.61:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #0F1734 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #0F1734 text on white | 17.61:1 | AAA | Lc 104.3 | Preferred for body text |
| #0F1734 text on black | 1.19:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CFD9F3
oklch(88.6% 0.037 268.9)
-
Step 300
300
#AFBFEE
oklch(80.9% 0.069 270.1)
-
Step 400
400
#859DE5
oklch(70.6% 0.109 269.4)
-
Step 500
500
#6883DE
oklch(63.1% 0.14 269.6)
-
Step 600
600
#506BCC
oklch(55.7% 0.153 269.3)
-
Step 700
700
#4158B0
oklch(49% 0.142 269.5)
-
Step 800
800
#36498F
oklch(42.8% 0.118 269.5)
-
Step 900
900
#2E3E72
oklch(37.8% 0.091 268.9)
-
Step 950
950 (this color)
#0F1734
oklch(21.5% 0.058 269.5)
#0F1734 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) | #091B35 | 0.014 |
| Deuteranopia (no green cones) | #041733 | 0.015 |
| Tritanopia (no blue cones) | #001E22 | 0.052 |
| Achromatopsia (no color) | #191919 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F1734
#0F1734
oklch(21.5% 0.058 269.5)
- #221800
#221800
oklch(21.6% 0.044 88)
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 #0F1734, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.027
- Navy Blue #001146 ΔE 0.046
- Dark #1B2431 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.056
- Rich Navy #001219 ΔE 0.063
- Night Blue #040348 ΔE 0.067
- Dark Navy #000435 ΔE 0.068
- Jet #212529 ΔE 0.068
Use #0F1734 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.