#04171E
Closest named color: Rich Navy (#001219). oklch(19.2% 0.029 224.1), rgb(4, 23, 30).
Aa
White text reads best on this color (18.31:1).
About this color
#04171E is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.023 away. White text reads best on it, at 18.31:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.14:1 |
| White text | 18.31:1 |
Values
| HEX | #04171E |
| RGB | rgb(4, 23, 30) |
| HSL | hsl(196, 76%, 7%) |
| OKLCH | oklch(19.2% 0.029 224.1) |
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 #04171E | 18.31:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #04171E | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #04171E text on white | 18.31:1 | AAA | Lc 104.9 | Preferred for body text |
| #04171E text on black | 1.14:1 | 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
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#A9C6D1
oklch(80.9% 0.035 222.7)
-
Step 400
400
#7BA9BB
oklch(70.8% 0.056 224.1)
-
Step 500
500
#5793AA
oklch(63.1% 0.071 224.7)
-
Step 600
600
#397D95
oklch(55.6% 0.078 224.1)
-
Step 700
700
#2B697F
oklch(49% 0.072 224.6)
-
Step 800
800
#255667
oklch(42.7% 0.059 223.7)
-
Step 900
900
#244754
oklch(37.7% 0.046 224.4)
-
Step 950
950 (this color)
#04171E
oklch(19.2% 0.029 224.1)
#04171E 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) | #13161E | 0.023 |
| Deuteranopia (no green cones) | #0F131E | 0.021 |
| Tritanopia (no blue cones) | #001919 | 0.016 |
| Achromatopsia (no color) | #151515 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04171E
#04171E
oklch(19.2% 0.029 224.1)
- #1F1009
#1F1009
oklch(19.2% 0.029 45.7)
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 #04171E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.023
- Rich Black #0D1B2A ΔE 0.030
- Almost Black #070D0D ΔE 0.045
- Dark #1B2431 ΔE 0.068
- Jet #212529 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.082
- Dark Navy #000435 ΔE 0.082
- Navy Blue #001146 ΔE 0.083
Use #04171E 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.