#1F3530
Closest named color: Gunmetal (#293241). oklch(30.9% 0.029 178.3), rgb(31, 53, 48).
Aa
White text reads best on this color (13.04:1).
About this color
#1F3530 is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.040 away. White text reads best on it, at 13.04:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.61:1 |
| White text | 13.04:1 |
Values
| HEX | #1F3530 |
| RGB | rgb(31, 53, 48) |
| HSL | hsl(166, 26%, 16%) |
| OKLCH | oklch(30.9% 0.029 178.3) |
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 #1F3530 | 13.04:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #1F3530 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #1F3530 text on white | 13.04:1 | AAA | Lc 99.3 | Preferred for body text |
| #1F3530 text on black | 1.61:1 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CCDED9
oklch(88.6% 0.02 177.4)
-
Step 300
300
#AAC8C1
oklch(80.9% 0.034 179.7)
-
Step 400
400
#7BACA1
oklch(70.6% 0.055 179.2)
-
Step 500
500
#56988A
oklch(63.1% 0.071 178.6)
-
Step 600
600
#388273
oklch(55.5% 0.078 178)
-
Step 700
700
#296E61
oklch(49.1% 0.072 178.6)
-
Step 800
800
#245A4F
oklch(42.8% 0.06 177.8)
-
Step 900
900
#234A42
oklch(37.8% 0.047 178.6)
-
Step 950
950 (this color)
#1F3530
oklch(30.9% 0.029 178.3)
#1F3530 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) | #333230 | 0.031 |
| Deuteranopia (no green cones) | #2F3030 | 0.028 |
| Tritanopia (no blue cones) | #183633 | 0.009 |
| Achromatopsia (no color) | #313131 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F3530
#1F3530
oklch(30.9% 0.029 178.3)
- #3D2A30
#3D2A30
oklch(31% 0.03 358.3)
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 #1F3530, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.040
- Pakistan Green #283618 ΔE 0.040
- Onyx #343A40 ΔE 0.046
- Midnight Green #073B4C ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.053
- Jet #212529 ΔE 0.054
- Dark #1B2431 ΔE 0.063
Use #1F3530 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.