#00191F
Closest named color: Rich Navy (#001219). oklch(19.6% 0.035 215.2), rgb(0, 25, 31).
Aa
White text reads best on this color (18.12:1).
About this color
#00191F is a very dark, muted teal or cyan. In OKLCH its lightness is 20%, its chroma 0.035 and its hue 215°. 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 18.12:1.
| Hue family | Teals and cyans |
| Lightness | very dark (20%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.12:1 |
Values
| HEX | #00191F |
| RGB | rgb(0, 25, 31) |
| HSL | hsl(192, 100%, 6%) |
| OKLCH | oklch(19.6% 0.035 215.2) |
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 #00191F | 18.12:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #00191F | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #00191F text on white | 18.12:1 | AAA | Lc 104.7 | Preferred for body text |
| #00191F 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE3
oklch(88.4% 0.023 217.7)
-
Step 300
300
#A3C8D1
oklch(80.9% 0.041 214.2)
-
Step 400
400
#6FABBA
oklch(70.6% 0.066 215.3)
-
Step 500
500
#4496A9
oklch(63% 0.084 215.3)
-
Step 600
600
#1B8095
oklch(55.5% 0.092 215.8)
-
Step 700
700
#076C7F
oklch(49% 0.085 215.8)
-
Step 800
800
#0F5867
oklch(42.6% 0.07 215.7)
-
Step 900
900
#174954
oklch(37.7% 0.055 215.1)
-
Step 950
950 (this color)
#00191F
oklch(19.6% 0.035 215.2)
#00191F 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) | #15181F | 0.031 |
| Deuteranopia (no green cones) | #10141F | 0.028 |
| Tritanopia (no blue cones) | #001B1B | 0.013 |
| Achromatopsia (no color) | #161616 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00191F
#00191F
oklch(19.6% 0.035 215.2)
- #230F0A
#230F0A
oklch(19.7% 0.036 35)
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 #00191F, 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 0.030
- Almost Black #070D0D ΔE 0.051
- Dark #1B2431 ΔE 0.066
- Jet #212529 ΔE 0.071
- Oxford Blue #1B263B ΔE 0.079
- Navy Blue #001146 ΔE 0.084
- Dark Navy #000435 ΔE 0.086
Use #00191F 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.