#FF505B
Closest named color: Watermelon (#FD4659). oklch(67.8% 0.21 21.4), rgb(255, 80, 91).
Aa
Black text reads best on this color (6.55:1).
About this color
#FF505B is a medium-light, vivid red. In OKLCH its lightness is 68%, its chroma 0.210 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Watermelon (#FD4659), ΔE 0.016 away. Black text reads best on it, at 6.55:1.
| Hue family | Reds |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.210) |
| Temperature | warm |
| Nearest name | Watermelon (#FD4659) |
| Black text | 6.55:1 |
| White text | 3.20:1 |
Values
| HEX | #FF505B |
| RGB | rgb(255, 80, 91) |
| HSL | hsl(356, 100%, 66%) |
| OKLCH | oklch(67.8% 0.21 21.4) |
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 #FF505B | 3.20:1 | AA large text | Lc -63.4 | Content text, not long reading |
| Black text on #FF505B | 6.55:1 | AA | Lc 46.0 | Large or bold text, headings |
| #FF505B text on white | 3.20:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #FF505B text on black | 6.55:1 | AA | Lc -43.7 | 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 400.
-
Step 50
50
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2E0
oklch(93.6% 0.032 22.5)
-
Step 200
200
#FFCAC8
oklch(88.5% 0.061 20.9)
-
Step 300
300
#FFA4A2
oklch(80.9% 0.108 21.1)
-
Step 400
400 (this color)
#FF505B
oklch(67.8% 0.21 21.4)
-
Step 500
500
#FF003D
oklch(63.2% 0.254 21.5)
-
Step 600
600
#D70032
oklch(55.5% 0.224 21.5)
-
Step 700
700
#B60029
oklch(49% 0.197 21.4)
-
Step 800
800
#970020
oklch(42.7% 0.172 21.5)
-
Step 900
900
#7F001A
oklch(37.7% 0.152 21.2)
-
Step 950
950
#4F000C
oklch(27% 0.109 21.5)
#FF505B 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) | #80785A | 0.229 |
| Deuteranopia (no green cones) | #AC9D56 | 0.210 |
| Tritanopia (no blue cones) | #FF1C56 | 0.055 |
| Achromatopsia (no color) | #909090 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #FF505B
#FF505B
oklch(67.8% 0.21 21.4)
- #00ACB5
#00ACB5
oklch(67.7% 0.115 201.4)
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 #FF505B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Watermelon #FD4659 ΔE 0.016
- Grapefruit #FD5956 ΔE 0.017
- Light Red #FF474C ΔE 0.018
- Coral Pink #FF6163 ΔE 0.027
- Tomato #FF6347 ΔE 0.045
- Warm Pink #FB5581 ΔE 0.048
- Paradise Pink #EF476F ΔE 0.049
- Strawberry #FB2943 ΔE 0.049
Use #FF505B 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.