#FD1818
Closest named color: Bright Red (#FF000D). oklch(63% 0.25 28.5), rgb(253, 24, 24).
Aa
Black text reads best on this color (5.32:1).
About this color
#FD1818 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.250 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Bright Red (#FF000D), ΔE 0.007 away. Black text reads best on it, at 5.32:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.250) |
| Temperature | warm |
| Nearest name | Bright Red (#FF000D) |
| Black text | 5.32:1 |
| White text | 3.94:1 |
Values
| HEX | #FD1818 |
| RGB | rgb(253, 24, 24) |
| HSL | hsl(0, 98%, 54%) |
| OKLCH | oklch(63% 0.25 28.5) |
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 #FD1818 | 3.94:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #FD1818 | 5.32:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #FD1818 text on white | 3.94:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #FD1818 text on black | 5.32:1 | AA | Lc -37.4 | 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 500.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FFE2DE
oklch(93.5% 0.033 27.1)
-
Step 200
200
#FFCBC3
oklch(88.6% 0.06 28.4)
-
Step 300
300
#FFA599
oklch(80.8% 0.109 28)
-
Step 400
400
#FF6A5A
oklch(70.7% 0.185 28.7)
-
Step 500
500 (this color)
#FD1818
oklch(63% 0.25 28.5)
-
Step 600
600
#D90009
oklch(55.6% 0.228 28.5)
-
Step 700
700
#B80006
oklch(49.2% 0.201 28.5)
-
Step 800
800
#980004
oklch(42.7% 0.175 28.5)
-
Step 900
900
#800003
oklch(37.7% 0.154 28.5)
-
Step 950
950
#4D0504
oklch(26.9% 0.103 28.4)
#FD1818 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) | #6E6110 | 0.275 |
| Deuteranopia (no green cones) | #A39100 | 0.246 |
| Tritanopia (no blue cones) | #FF001F | 0.010 |
| Achromatopsia (no color) | #808080 | 0.252 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #FD1818
#FD1818
oklch(63% 0.25 28.5)
- #009BAC
#009BAC
oklch(63.1% 0.109 208.4)
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 #FD1818, closest first.
No curated palette has a color within ΔE 0.04 of #FD1818.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Red #FF000D ΔE 0.007
- Fire Engine Red #FE0002 ΔE 0.008
- Red #FF0000 ΔE 0.009
- Cherry Red #F7022A ΔE 0.021
- Vermillion #F4320C ΔE 0.024
- Neon Red #FF073A ΔE 0.027
- Strawberry #FB2943 ΔE 0.031
- Red Orange #FD3C06 ΔE 0.033
Use #FD1818 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.