#FF9F51
Closest named color: Pale Orange (#FFA756). oklch(78.6% 0.147 57.3), rgb(255, 159, 81).
Aa
Black text reads best on this color (10.33:1).
About this color
#FF9F51 is a light, vivid orange. In OKLCH its lightness is 79%, its chroma 0.147 and its hue 57°. Its hue sits on the warm side of the wheel. The nearest named color is Pale Orange (#FFA756), ΔE 0.018 away. Black text reads best on it, at 10.33:1.
| Hue family | Oranges |
| Lightness | light (79%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Pale Orange (#FFA756) |
| Black text | 10.33:1 |
| White text | 2.03:1 |
Values
| HEX | #FF9F51 |
| RGB | rgb(255, 159, 81) |
| HSL | hsl(27, 100%, 66%) |
| OKLCH | oklch(78.6% 0.147 57.3) |
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 #FF9F51 | 2.03:1 | Fails | Lc -43.7 | Non-text elements, placeholder text |
| Black text on #FF9F51 | 10.33:1 | AAA | Lc 64.7 | Content text, not long reading |
| #FF9F51 text on white | 2.03:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #FF9F51 text on black | 10.33:1 | AAA | Lc -63.1 | Content text, not long reading |
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 300.
-
Step 50
50
#FFF3EA
oklch(97.1% 0.018 59.5)
-
Step 100
100
#FFE4D1
oklch(93.6% 0.039 57.4)
-
Step 200
200
#FFCEAA
oklch(88.5% 0.073 57.9)
-
Step 300
300 (this color)
#FF9F51
oklch(78.6% 0.147 57.3)
-
Step 400
400
#ED8000
oklch(70.7% 0.17 57.4)
-
Step 500
500
#CC6D00
oklch(63.1% 0.152 57.3)
-
Step 600
600
#AC5B00
oklch(55.6% 0.134 57.3)
-
Step 700
700
#914C00
oklch(49.1% 0.118 57.5)
-
Step 800
800
#783D00
oklch(42.7% 0.104 56.7)
-
Step 900
900
#643300
oklch(37.7% 0.09 58)
-
Step 950
950
#3D1D00
oklch(27% 0.064 58.4)
#FF9F51 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) | #BCA949 | 0.111 |
| Deuteranopia (no green cones) | #D2BE51 | 0.100 |
| Tritanopia (no blue cones) | #FF8B8E | 0.097 |
| Achromatopsia (no color) | #B6B6B6 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #FF9F51
#FF9F51
oklch(78.6% 0.147 57.3)
- #62C5FF
#62C5FF
oklch(78.7% 0.124 237)
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 #FF9F51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pale Orange #FFA756 ΔE 0.018
- Pastel Orange #FF964F ΔE 0.021
- Sandy Brown #F4A460 ΔE 0.021
- Light Orange #FDAA48 ΔE 0.030
- Mango #FFA62B ΔE 0.035
- Tangerine #FF9408 ΔE 0.038
- Faded Orange #F0944D ΔE 0.038
- Light Salmon #FFA07A ΔE 0.042
Use #FF9F51 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.