#00191C
Closest named color: Rich Navy (#001219). oklch(19.5% 0.033 205.3), rgb(0, 25, 28).
Aa
White text reads best on this color (18.16:1).
About this color
#00191C is a very dark, muted teal or cyan. In OKLCH its lightness is 19%, its chroma 0.033 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.028 away. White text reads best on it, at 18.16:1.
| Hue family | Teals and cyans |
| Lightness | very dark (19%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.16:1 |
Values
| HEX | #00191C |
| RGB | rgb(0, 25, 28) |
| HSL | hsl(186, 100%, 5%) |
| OKLCH | oklch(19.5% 0.033 205.3) |
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 #00191C | 18.16:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #00191C | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #00191C text on white | 18.16:1 | AAA | Lc 104.7 | Preferred for body text |
| #00191C text on black | 1.15:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A4C8CD
oklch(80.8% 0.039 206.8)
-
Step 400
400
#70ACB3
oklch(70.6% 0.063 205.2)
-
Step 500
500
#4598A1
oklch(63.2% 0.081 204.9)
-
Step 600
600
#1D828C
oklch(55.7% 0.088 205.1)
-
Step 700
700
#0B6E77
oklch(49.2% 0.082 205)
-
Step 800
800
#115961
oklch(42.6% 0.067 206.3)
-
Step 900
900
#184A4F
oklch(37.8% 0.053 204.5)
-
Step 950
950 (this color)
#00191C
oklch(19.5% 0.033 205.3)
#00191C 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) | #16171C | 0.033 |
| Deuteranopia (no green cones) | #11141C | 0.030 |
| Tritanopia (no blue cones) | #001B1A | 0.010 |
| Achromatopsia (no color) | #161616 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00191C
#00191C
oklch(19.5% 0.033 205.3)
- #220F0D
#220F0D
oklch(19.6% 0.033 26.8)
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 #00191C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.028
- Rich Black #0D1B2A ΔE 0.035
- Almost Black #070D0D ΔE 0.048
- Dark #1B2431 ΔE 0.069
- Jet #212529 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.083
- Navy Blue #001146 ΔE 0.090
- Dark Navy #000435 ΔE 0.090
Use #00191C 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.