#CF3123
Closest named color: Dull Red (#BB3F3F). oklch(56.1% 0.196 29.7), rgb(207, 49, 35).
Aa
White text reads best on this color (5.10:1).
About this color
#CF3123 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.196 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.044 away. White text reads best on it, at 5.10:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.196) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.11:1 |
| White text | 5.10:1 |
Values
| HEX | #CF3123 |
| RGB | rgb(207, 49, 35) |
| HSL | hsl(5, 71%, 47%) |
| OKLCH | oklch(56.1% 0.196 29.7) |
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 #CF3123 | 5.10:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #CF3123 | 4.11:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #CF3123 text on white | 5.10:1 | AA | Lc 73.6 | Content text, not long reading |
| #CF3123 text on black | 4.11:1 | AA large text | Lc -28.0 | 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 600.
-
Step 50
50
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F8CEC6
oklch(88.5% 0.049 30.7)
-
Step 300
300
#F4AB9F
oklch(80.8% 0.088 29.5)
-
Step 400
400
#EB7B6B
oklch(70.6% 0.141 29.5)
-
Step 500
500
#E25342
oklch(63.1% 0.181 29.8)
-
Step 600
600 (this color)
#CF3123
oklch(56.1% 0.196 29.7)
-
Step 700
700
#B11E13
oklch(49.1% 0.183 29.6)
-
Step 800
800
#901D14
oklch(42.7% 0.152 29.4)
-
Step 900
900
#732018
oklch(37.6% 0.118 29.3)
-
Step 950
950
#44150F
oklch(27.1% 0.074 29.9)
#CF3123 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) | #63581F | 0.210 |
| Deuteranopia (no green cones) | #897A1A | 0.191 |
| Tritanopia (no blue cones) | #E40030 | 0.049 |
| Achromatopsia (no color) | #6E6E6E | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CF3123
#CF3123
oklch(56.1% 0.196 29.7)
- #008494
#008494
oklch(56.2% 0.097 209.6)
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 #CF3123, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.044
- Cherry #CF0234 ΔE 0.044
- Crimson #DC143C ΔE 0.044
- Sinopia #BB3E03 ΔE 0.046
- Faded Red #D3494E ΔE 0.049
- Brick Orange #C14A09 ΔE 0.050
- Dark Coral #CF524E ΔE 0.057
- Tomato Red #EC2D01 ΔE 0.058
Use #CF3123 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.