#D33F00
Closest named color: Deep Orange (#DC4D01). oklch(58% 0.193 37.2), rgb(211, 63, 0).
Aa
White text reads best on this color (4.68:1).
About this color
#D33F00 is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.193 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.032 away. White text reads best on it, at 4.68:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.193) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #D33F00 |
| RGB | rgb(211, 63, 0) |
| HSL | hsl(18, 100%, 41%) |
| OKLCH | oklch(58% 0.193 37.2) |
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 #D33F00 | 4.68:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #D33F00 | 4.48:1 | AA large text | Lc 32.9 | Non-text elements, placeholder text |
| #D33F00 text on white | 4.68:1 | AA | Lc 71.2 | Content text, not long reading |
| #D33F00 text on black | 4.48:1 | AA large text | Lc -30.5 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE5DE
oklch(93.7% 0.025 39.4)
-
Step 200
200
#F7CFC3
oklch(88.5% 0.048 37.3)
-
Step 300
300
#F3AD99
oklch(80.9% 0.088 36.6)
-
Step 400
400
#E97F5F
oklch(70.8% 0.139 37.6)
-
Step 500
500
#DF582E
oklch(63.1% 0.178 37.3)
-
Step 600
600 (this color)
#D33F00
oklch(58% 0.193 37.2)
-
Step 700
700
#A93100
oklch(49.2% 0.163 37.3)
-
Step 800
800
#8C2700
oklch(42.8% 0.142 37.3)
-
Step 900
900
#722409
oklch(37.7% 0.116 37.6)
-
Step 950
950
#431609
oklch(26.9% 0.073 36.7)
#D33F00 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) | #6D5F00 | 0.196 |
| Deuteranopia (no green cones) | #918000 | 0.176 |
| Tritanopia (no blue cones) | #E90036 | 0.074 |
| Achromatopsia (no color) | #747474 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D33F00
#D33F00
oklch(58% 0.193 37.2)
- #0089A2
#0089A2
oklch(58.1% 0.104 216.6)
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 #D33F00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.032
- Brick Orange #C14A09 ΔE 0.036
- Burnt Orange #C04E01 ΔE 0.041
- Rust Orange #C45508 ΔE 0.044
- Rusty Orange #CD5909 ΔE 0.045
- Sinopia #BB3E03 ΔE 0.048
- Tomato Red #EC2D01 ΔE 0.049
- Faded Red #D3494E ΔE 0.055
Use #D33F00 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.