#210507
Closest named color: Very Dark Brown (#1D0200). oklch(17.1% 0.05 18.8), rgb(33, 5, 7).
Aa
White text reads best on this color (19.27:1).
About this color
#210507 is a very dark, muted red. In OKLCH its lightness is 17%, its chroma 0.050 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.025 away. White text reads best on it, at 19.27:1.
| Hue family | Reds |
| Lightness | very dark (17%) |
| Chroma | muted (0.050) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.08:1 |
| White text | 19.27:1 |
Values
| HEX | #210507 |
| RGB | rgb(33, 5, 7) |
| HSL | hsl(356, 74%, 7%) |
| OKLCH | oklch(17.1% 0.05 18.8) |
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 #210507 | 19.27:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #210507 | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #210507 text on white | 19.27:1 | AAA | Lc 105.3 | Preferred for body text |
| #210507 text on black | 1.08:1 | 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
#FBF3F3
oklch(97% 0.009 17.3)
-
Step 100
100
#F5E6E5
oklch(93.7% 0.016 22.1)
-
Step 200
200
#EED1D1
oklch(88.5% 0.033 17.8)
-
Step 300
300
#E4B2B2
oklch(80.9% 0.058 18.4)
-
Step 400
400
#D58889
oklch(70.6% 0.095 18.9)
-
Step 500
500
#C8696C
oklch(63.1% 0.121 19.1)
-
Step 600
600
#B34F54
oklch(55.7% 0.13 19.3)
-
Step 700
700
#9A3F45
oklch(49.2% 0.122 18.8)
-
Step 800
800
#7D3439
oklch(42.7% 0.102 18.3)
-
Step 900
900
#652E31
oklch(37.7% 0.079 18.3)
-
Step 950
950 (this color)
#210507
oklch(17.1% 0.05 18.8)
#210507 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) | #0B0A07 | 0.055 |
| Deuteranopia (no green cones) | #131006 | 0.049 |
| Tritanopia (no blue cones) | #250206 | 0.013 |
| Achromatopsia (no color) | #0E0E0E | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #210507
#210507
oklch(17.1% 0.05 18.8)
- #001314
#001314
oklch(17% 0.029 198.9)
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 #210507, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.025
- Almost Black #070D0D ΔE 0.063
- Dark Maroon #3C0008 ΔE 0.068
- Rich Navy #001219 ΔE 0.080
- Deep Brown #410200 ΔE 0.082
- Rich Black #0D1B2A ΔE 0.090
- Dark Brown #341C02 ΔE 0.092
- Very Dark Purple #2A0134 ΔE 0.094
Use #210507 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.