#B01C02
Closest named color: Rufous (#AE2012). oklch(48.7% 0.185 31.7), rgb(176, 28, 2).
Aa
White text reads best on this color (6.96:1).
About this color
#B01C02 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.185 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.007 away. White text reads best on it, at 6.96:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.185) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 3.01:1 |
| White text | 6.96:1 |
Values
| HEX | #B01C02 |
| RGB | rgb(176, 28, 2) |
| HSL | hsl(9, 98%, 35%) |
| OKLCH | oklch(48.7% 0.185 31.7) |
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 #B01C02 | 6.96:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #B01C02 | 3.01:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #B01C02 text on white | 6.96:1 | AA | Lc 82.2 | Fine for body text |
| #B01C02 text on black | 3.01:1 | AA large text | Lc -19.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC5
oklch(88.5% 0.049 32.1)
-
Step 300
300
#F5AC9D
oklch(81% 0.089 32)
-
Step 400
400
#EC7B67
oklch(70.7% 0.143 31.4)
-
Step 500
500
#E2533C
oklch(63.1% 0.182 31.6)
-
Step 600
600
#CE2F15
oklch(55.7% 0.199 31.8)
-
Step 700
700 (this color)
#B01C02
oklch(48.7% 0.185 31.7)
-
Step 800
800
#901D0B
oklch(42.7% 0.153 31.6)
-
Step 900
900
#742013
oklch(37.7% 0.12 31.6)
-
Step 950
950
#44150D
oklch(27% 0.075 31.9)
#B01C02 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) | #4F4500 | 0.198 |
| Deuteranopia (no green cones) | #726500 | 0.177 |
| Tritanopia (no blue cones) | #C3001A | 0.042 |
| Achromatopsia (no color) | #595959 | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B01C02
#B01C02
oklch(48.7% 0.185 31.7)
- #006C7B
#006C7B
oklch(48.7% 0.085 211.3)
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 #B01C02, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.007
- Rust Red #AA2704 ΔE 0.015
- Firebrick #B22222 ΔE 0.019
- Rusty Red #AF2F0D ΔE 0.022
- Brown #A52A2A ΔE 0.032
- Scarlet #BE0119 ΔE 0.033
- Burnt Red #9F2305 ΔE 0.034
- Brick #A03623 ΔE 0.040
Use #B01C02 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.