#A1891C
Closest named color: Dark Mustard (#A88905). oklch(63.4% 0.122 95.6), rgb(161, 137, 28).
Aa
Black text reads best on this color (6.11:1).
About this color
#A1891C is a medium-light, moderately saturated yellow. In OKLCH its lightness is 63%, its chroma 0.122 and its hue 96°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Mustard (#A88905), ΔE 0.012 away. Black text reads best on it, at 6.11:1.
| Hue family | Yellows |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.122) |
| Temperature | warm |
| Nearest name | Dark Mustard (#A88905) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #A1891C |
| RGB | rgb(161, 137, 28) |
| HSL | hsl(49, 70%, 37%) |
| OKLCH | oklch(63.4% 0.122 95.6) |
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 #A1891C | 3.43:1 | AA large text | Lc -67.2 | Content text, not long reading |
| Black text on #A1891C | 6.11:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #A1891C text on white | 3.43:1 | AA large text | Lc 61.7 | Content text, not long reading |
| #A1891C text on black | 6.11:1 | AA | Lc -40.0 | 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
#F7F5F0
oklch(97% 0.007 88.6)
-
Step 100
100
#EDEADD
oklch(93.6% 0.018 96.1)
-
Step 200
200
#DFD9C1
oklch(88.4% 0.033 95.4)
-
Step 300
300
#CCC195
oklch(80.9% 0.06 95.7)
-
Step 400
400
#B3A058
oklch(70.7% 0.095 95)
-
Step 500
500 (this color)
#A1891C
oklch(63.4% 0.122 95.6)
-
Step 600
600
#887200
oklch(55.6% 0.114 95.6)
-
Step 700
700
#725F00
oklch(49% 0.101 95.4)
-
Step 800
800
#5E4E00
oklch(42.8% 0.088 95.4)
-
Step 900
900
#4E4100
oklch(37.8% 0.078 96.2)
-
Step 950
950
#2E2604
oklch(27% 0.051 95.6)
#A1891C 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) | #988600 | 0.020 |
| Deuteranopia (no green cones) | #9E8E24 | 0.013 |
| Tritanopia (no blue cones) | #AF7D75 | 0.113 |
| Achromatopsia (no color) | #8A8A8A | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1891C
#A1891C
oklch(63.4% 0.122 95.6)
- #7683D4
#7683D4
oklch(63.5% 0.122 275.4)
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 #A1891C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mustard #A88905 ΔE 0.012
- Yellowy Brown #AE8B0C ΔE 0.022
- Mustard Brown #AC7E04 ΔE 0.031
- Dark Goldenrod #B8860B ΔE 0.037
- Bronze #A87900 ΔE 0.041
- Golden Brown #B27A01 ΔE 0.044
- Dark Gold #B59410 ΔE 0.046
- Dark Tan #AF884A ΔE 0.047
Use #A1891C 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.