#03191C
Closest named color: Rich Navy (#001219). oklch(19.7% 0.029 206.9), rgb(3, 25, 28).
Aa
White text reads best on this color (18.10:1).
About this color
#03191C is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.029 away. White text reads best on it, at 18.10:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.10:1 |
Values
| HEX | #03191C |
| RGB | rgb(3, 25, 28) |
| HSL | hsl(187, 81%, 6%) |
| OKLCH | oklch(19.7% 0.029 206.9) |
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 #03191C | 18.10:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #03191C | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #03191C text on white | 18.10:1 | AAA | Lc 104.7 | Preferred for body text |
| #03191C 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
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A7C7CC
oklch(80.8% 0.035 208)
-
Step 400
400
#77ABB2
oklch(70.7% 0.056 206.5)
-
Step 500
500
#51969F
oklch(63.1% 0.071 206.5)
-
Step 600
600
#31808A
oklch(55.6% 0.077 206.8)
-
Step 700
700
#226C75
oklch(49.1% 0.072 206.7)
-
Step 800
800
#1F585F
oklch(42.6% 0.059 206.5)
-
Step 900
900
#20494E
oklch(37.8% 0.046 206)
-
Step 950
950 (this color)
#03191C
oklch(19.7% 0.029 206.9)
#03191C 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) | #16181C | 0.028 |
| Deuteranopia (no green cones) | #12151C | 0.025 |
| Tritanopia (no blue cones) | #001B1A | 0.011 |
| Achromatopsia (no color) | #161616 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03191C
#03191C
oklch(19.7% 0.029 206.9)
- #21100E
#21100E
oklch(19.7% 0.029 27.2)
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 #03191C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.033
- Almost Black #070D0D ΔE 0.049
- Dark #1B2431 ΔE 0.066
- Jet #212529 ΔE 0.069
- Oxford Blue #1B263B ΔE 0.081
- Navy Blue #001146 ΔE 0.090
- Dark Navy #000435 ΔE 0.091
Use #03191C 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.