#BC2523
Closest named color: Firebrick (#B22222). oklch(51.8% 0.187 27.3), rgb(188, 37, 35).
Aa
White text reads best on this color (6.12:1).
About this color
#BC2523 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.187 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.022 away. White text reads best on it, at 6.12:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.187) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.42:1 |
| White text | 6.12:1 |
Values
| HEX | #BC2523 |
| RGB | rgb(188, 37, 35) |
| HSL | hsl(1, 69%, 44%) |
| OKLCH | oklch(51.8% 0.187 27.3) |
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 #BC2523 | 6.12:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #BC2523 | 3.42:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #BC2523 text on white | 6.12:1 | AA | Lc 78.9 | Fine for body text |
| #BC2523 text on black | 3.42:1 | AA large text | Lc -22.9 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F9CDC7
oklch(88.5% 0.051 27.2)
-
Step 300
300
#F6AAA1
oklch(80.9% 0.091 26.8)
-
Step 400
400
#ED796E
oklch(70.6% 0.145 26.9)
-
Step 500
500
#E45047
oklch(63.2% 0.185 27.2)
-
Step 600
600
#CF2A27
oklch(55.6% 0.201 27.5)
-
Step 700
700 (this color)
#BC2523
oklch(51.8% 0.187 27.3)
-
Step 800
800
#911A18
oklch(42.7% 0.155 27.5)
-
Step 900
900
#741E1A
oklch(37.6% 0.12 27.3)
-
Step 950
950
#451410
oklch(27.1% 0.076 27.9)
#BC2523 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) | #564D21 | 0.202 |
| Deuteranopia (no green cones) | #7B6D1B | 0.183 |
| Tritanopia (no blue cones) | #CF0027 | 0.040 |
| Achromatopsia (no color) | #626262 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BC2523
#BC2523
oklch(51.8% 0.187 27.3)
- #007682
#007682
oklch(51.7% 0.089 207.2)
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 #BC2523, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.022
- Scarlet #BE0119 ΔE 0.022
- Lipstick Red #C0022F ΔE 0.030
- Rusty Red #AF2F0D ΔE 0.033
- Rufous #AE2012 ΔE 0.033
- Dull Red #BB3F3F ΔE 0.039
- Rust Red #AA2704 ΔE 0.042
- Rose Red #BE013C ΔE 0.043
Use #BC2523 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.