#B1B239
Closest named color: Muddy Yellow (#BFAC05). oklch(74.1% 0.14 109.8), rgb(177, 178, 57).
Aa
Black text reads best on this color (9.29:1).
About this color
#B1B239 is a medium-light, moderately saturated yellow. In OKLCH its lightness is 74%, its chroma 0.140 and its hue 110°. Its hue sits on the warm side of the wheel. The nearest named color is Muddy Yellow (#BFAC05), ΔE 0.026 away. Black text reads best on it, at 9.29:1.
| Hue family | Yellows |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.140) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 9.29:1 |
| White text | 2.25:1 |
Values
| HEX | #B1B239 |
| RGB | rgb(177, 178, 57) |
| HSL | hsl(60, 51%, 46%) |
| OKLCH | oklch(74.1% 0.14 109.8) |
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 #B1B239 | 2.25:1 | Fails | Lc -49.2 | Large or bold text, headings |
| Black text on #B1B239 | 9.29:1 | AAA | Lc 59.5 | Large or bold text, headings |
| #B1B239 text on white | 2.25:1 | Fails | Lc 44.4 | Non-text elements, placeholder text |
| #B1B239 text on black | 9.29:1 | AAA | Lc -57.7 | Large or bold text, headings |
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
#F6F6ED
oklch(97.1% 0.012 106.6)
-
Step 100
100
#EAECD9
oklch(93.6% 0.025 111.8)
-
Step 200
200
#DBDCB8
oklch(88.4% 0.048 108.6)
-
Step 300
300
#C4C683
oklch(80.9% 0.088 109.7)
-
Step 400
400 (this color)
#B1B239
oklch(74.1% 0.14 109.8)
-
Step 500
500
#8F9000
oklch(63.2% 0.138 110.3)
-
Step 600
600
#787900
oklch(55.7% 0.122 110.4)
-
Step 700
700
#656500
oklch(49.1% 0.107 109.8)
-
Step 800
800
#535300
oklch(42.8% 0.093 109.8)
-
Step 900
900
#454500
oklch(37.8% 0.082 109.8)
-
Step 950
950
#282900
oklch(27.1% 0.06 111.2)
#B1B239 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) | #C0AA27 | 0.027 |
| Deuteranopia (no green cones) | #C1AE41 | 0.028 |
| Tritanopia (no blue cones) | #BDA79A | 0.126 |
| Achromatopsia (no color) | #ACACAC | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1B239
#B1B239
oklch(74.1% 0.14 109.8)
- #AA9AFD
#AA9AFD
oklch(74% 0.141 289.9)
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 #B1B239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Yellow #BFAC05 ΔE 0.026
- Mustard Green #A8B504 ΔE 0.030
- Olive Yellow #C2B709 ΔE 0.034
- Light Olive Green #A4BE5C ΔE 0.036
- Mustard #CEB301 ΔE 0.044
- Pea #A4BF20 ΔE 0.045
- Light Olive #ACBF69 ΔE 0.045
- Avocado #90B134 ΔE 0.046
Use #B1B239 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.