#03191E
Closest named color: Rich Black (#0D1B2A). oklch(19.8% 0.03 214.4), rgb(3, 25, 30).
Aa
White text reads best on this color (18.07:1).
About this color
#03191E is a very dark, muted teal or cyan. In OKLCH its lightness is 20%, its chroma 0.030 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 18.07:1.
| Hue family | Teals and cyans |
| Lightness | very dark (20%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.07:1 |
Values
| HEX | #03191E |
| RGB | rgb(3, 25, 30) |
| HSL | hsl(191, 82%, 6%) |
| OKLCH | oklch(19.8% 0.03 214.4) |
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 #03191E | 18.07:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #03191E | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #03191E text on white | 18.07:1 | AAA | Lc 104.7 | Preferred for body text |
| #03191E text on black | 1.16:1 | 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
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE1
oklch(88.5% 0.02 212.6)
-
Step 300
300
#A7C7CF
oklch(80.9% 0.036 214.5)
-
Step 400
400
#76AAB7
oklch(70.6% 0.058 215)
-
Step 500
500
#5095A5
oklch(63.1% 0.074 214.6)
-
Step 600
600
#307F90
oklch(55.6% 0.08 214.5)
-
Step 700
700
#216B7B
oklch(49% 0.075 215.2)
-
Step 800
800
#1E5864
oklch(42.8% 0.062 213.9)
-
Step 900
900
#1F4851
oklch(37.6% 0.048 214.1)
-
Step 950
950 (this color)
#03191E
oklch(19.8% 0.03 214.4)
#03191E 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) | #15181E | 0.026 |
| Deuteranopia (no green cones) | #11151E | 0.024 |
| Tritanopia (no blue cones) | #001B1B | 0.012 |
| Achromatopsia (no color) | #161616 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03191E
#03191E
oklch(19.8% 0.03 214.4)
- #22100C
#22100C
oklch(19.8% 0.032 33.4)
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 #03191E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Rich Navy #001219 ΔE 0.029
- Almost Black #070D0D ΔE 0.050
- Dark #1B2431 ΔE 0.064
- Jet #212529 ΔE 0.068
- Oxford Blue #1B263B ΔE 0.078
- Navy Blue #001146 ΔE 0.086
- Dark Navy #000435 ΔE 0.088
Use #03191E 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.