#99583F
Closest named color: Sienna (#A0522D). oklch(53% 0.094 41.6), rgb(153, 88, 63).
Aa
White text reads best on this color (5.49:1).
About this color
#99583F is a medium-dark, moderately saturated brown. In OKLCH its lightness is 53%, its chroma 0.094 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.022 away. White text reads best on it, at 5.49:1.
| Hue family | Browns |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.094) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.82:1 |
| White text | 5.49:1 |
Values
| HEX | #99583F |
| RGB | rgb(153, 88, 63) |
| HSL | hsl(17, 42%, 42%) |
| OKLCH | oklch(53% 0.094 41.6) |
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 #99583F | 5.49:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #99583F | 3.82:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #99583F text on white | 5.49:1 | AA | Lc 77.2 | Fine for body text |
| #99583F text on black | 3.82:1 | AA large text | Lc -24.6 | 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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F2E7E4
oklch(93.6% 0.013 35.7)
-
Step 200
200
#E8D4CD
oklch(88.4% 0.024 40.3)
-
Step 300
300
#DAB8AC
oklch(80.9% 0.043 40.4)
-
Step 400
400
#C69380
oklch(70.7% 0.068 41.3)
-
Step 500
500
#B67860
oklch(63.1% 0.086 41.9)
-
Step 600
600 (this color)
#99583F
oklch(53% 0.094 41.6)
-
Step 700
700
#8A4F38
oklch(49.2% 0.087 41.8)
-
Step 800
800
#70412F
oklch(42.7% 0.072 41.5)
-
Step 900
900
#5B3729
oklch(37.7% 0.057 41.9)
-
Step 950
950
#352019
oklch(26.8% 0.035 39.2)
#99583F 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) | #69603D | 0.086 |
| Deuteranopia (no green cones) | #796E3E | 0.079 |
| Tritanopia (no blue cones) | #A64C52 | 0.050 |
| Achromatopsia (no color) | #696969 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99583F
#99583F
oklch(53% 0.094 41.6)
- #107792
#107792
oklch(52.9% 0.094 221.8)
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 #99583F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.022
- Sepia #985E2B ΔE 0.031
- Cocoa #875F42 ΔE 0.035
- Earth #A2653E ΔE 0.040
- Warm Brown #964E02 ΔE 0.048
- Burnt Umber #A0450E ΔE 0.050
- Cinnamon #AC4F06 ΔE 0.050
- Dirt Brown #836539 ΔE 0.053
Use #99583F 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.