#B5B207
Closest named color: Mustard Green (#A8B504). oklch(74.2% 0.159 108.5), rgb(181, 178, 7).
Aa
Black text reads best on this color (9.33:1).
About this color
#B5B207 is a medium-light, vivid yellow. In OKLCH its lightness is 74%, its chroma 0.159 and its hue 109°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Green (#A8B504), ΔE 0.020 away. Black text reads best on it, at 9.33:1.
| Hue family | Yellows |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.159) |
| Temperature | warm |
| Nearest name | Mustard Green (#A8B504) |
| Black text | 9.33:1 |
| White text | 2.24:1 |
Values
| HEX | #B5B207 |
| RGB | rgb(181, 178, 7) |
| HSL | hsl(59, 93%, 37%) |
| OKLCH | oklch(74.2% 0.159 108.5) |
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 #B5B207 | 2.24:1 | Fails | Lc -48.9 | Large or bold text, headings |
| Black text on #B5B207 | 9.33:1 | AAA | Lc 59.8 | Large or bold text, headings |
| #B5B207 text on white | 2.24:1 | Fails | Lc 44.1 | Non-text elements, placeholder text |
| #B5B207 text on black | 9.33:1 | AAA | Lc -58.0 | 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
#F6F6EC
oklch(97% 0.013 106.6)
-
Step 100
100
#EBECD6
oklch(93.6% 0.029 109.1)
-
Step 200
200
#DCDDB3
oklch(88.6% 0.056 108.6)
-
Step 300
300
#C6C679
oklch(80.9% 0.099 108.4)
-
Step 400
400 (this color)
#B5B207
oklch(74.2% 0.159 108.5)
-
Step 500
500
#918F00
oklch(63.1% 0.137 108.8)
-
Step 600
600
#7A7800
oklch(55.6% 0.12 108.6)
-
Step 700
700
#666500
oklch(49.1% 0.107 109.1)
-
Step 800
800
#545200
oklch(42.7% 0.092 108.1)
-
Step 900
900
#464400
oklch(37.6% 0.081 107.8)
-
Step 950
950
#292800
oklch(26.9% 0.058 108.3)
#B5B207 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) | #C2AA00 | 0.027 |
| Deuteranopia (no green cones) | #C4AF22 | 0.027 |
| Tritanopia (no blue cones) | #C3A597 | 0.145 |
| Achromatopsia (no color) | #ADADAD | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B5B207
#B5B207
oklch(74.2% 0.159 108.5)
- #A89BFF
#A89BFF
oklch(74.1% 0.142 288.4)
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 #B5B207, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Green #A8B504 ΔE 0.020
- Muddy Yellow #BFAC05 ΔE 0.021
- Olive Yellow #C2B709 ΔE 0.024
- Mustard #CEB301 ΔE 0.038
- Pea #A4BF20 ΔE 0.038
- Bright Olive #9CBB04 ΔE 0.040
- Light Olive Green #A4BE5C ΔE 0.049
- Avocado #90B134 ΔE 0.050
Use #B5B207 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.