#BC603B
Closest named color: Copper (#B66325). oklch(59.1% 0.129 41.8), rgb(188, 96, 59).
Aa
Black text reads best on this color (4.87:1).
About this color
#BC603B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 59%, its chroma 0.129 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.026 away. Black text reads best on it, at 4.87:1.
| Hue family | Browns |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.129) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.87:1 |
| White text | 4.30:1 |
Values
| HEX | #BC603B |
| RGB | rgb(188, 96, 59) |
| HSL | hsl(17, 52%, 48%) |
| OKLCH | oklch(59.1% 0.129 41.8) |
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 #BC603B | 4.30:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #BC603B | 4.87:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #BC603B text on white | 4.30:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #BC603B text on black | 4.87:1 | AA | Lc -32.3 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E6E1
oklch(93.5% 0.017 40.8)
-
Step 200
200
#EDD3C9
oklch(88.6% 0.032 42.2)
-
Step 300
300
#E2B5A4
oklch(80.9% 0.058 41.7)
-
Step 400
400
#D28D72
oklch(70.6% 0.093 42.2)
-
Step 500
500
#C56F4D
oklch(63.1% 0.119 41.9)
-
Step 600
600 (this color)
#BC603B
oklch(59.1% 0.129 41.8)
-
Step 700
700
#974523
oklch(49.1% 0.12 41.7)
-
Step 800
800
#7B391F
oklch(42.7% 0.1 41.2)
-
Step 900
900
#63321E
oklch(37.7% 0.077 42.3)
-
Step 950
950
#3A1E12
oklch(27% 0.049 43.5)
#BC603B 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) | #796D37 | 0.121 |
| Deuteranopia (no green cones) | #8F8239 | 0.112 |
| Tritanopia (no blue cones) | #CE4E58 | 0.067 |
| Achromatopsia (no color) | #7A7A7A | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BC603B
#BC603B
oklch(59.1% 0.129 41.8)
- #008BAC
#008BAC
oklch(59% 0.109 222.3)
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 #BC603B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.026
- Terra Cotta #C9643B ΔE 0.027
- Clay #B66A50 ΔE 0.027
- Adobe #BD6C48 ΔE 0.028
- Terracotta #CA6641 ΔE 0.031
- Rust Orange #C45508 ΔE 0.034
- Terracota #CB6843 ΔE 0.036
- Orange Brown #BE6400 ΔE 0.039
Use #BC603B 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.