#B9B400
Closest named color: Olive Yellow (#C2B709). oklch(75% 0.161 107.7), rgb(185, 180, 0).
Aa
Black text reads best on this color (9.59:1).
About this color
#B9B400 is a medium-light, vivid yellow. In OKLCH its lightness is 75%, its chroma 0.161 and its hue 108°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Yellow (#C2B709), ΔE 0.016 away. Black text reads best on it, at 9.59:1.
| Hue family | Yellows |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.161) |
| Temperature | warm |
| Nearest name | Olive Yellow (#C2B709) |
| Black text | 9.59:1 |
| White text | 2.18:1 |
Values
| HEX | #B9B400 |
| RGB | rgb(185, 180, 0) |
| HSL | hsl(58, 100%, 36%) |
| OKLCH | oklch(75% 0.161 107.7) |
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 #B9B400 | 2.18:1 | Fails | Lc -47.6 | Large or bold text, headings |
| Black text on #B9B400 | 9.59:1 | AAA | Lc 61.1 | Content text, not long reading |
| #B9B400 text on white | 2.18:1 | Fails | Lc 42.9 | Non-text elements, placeholder text |
| #B9B400 text on black | 9.59:1 | AAA | Lc -59.3 | 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
#DCDCB2
oklch(88.4% 0.055 107.5)
-
Step 300
300
#C7C677
oklch(81% 0.101 107.8)
-
Step 400
400 (this color)
#B9B400
oklch(75% 0.161 107.7)
-
Step 500
500
#928E00
oklch(63% 0.136 107.7)
-
Step 600
600
#7B7800
oklch(55.7% 0.12 108)
-
Step 700
700
#676400
oklch(49% 0.105 107.7)
-
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
#2A2800
oklch(27% 0.058 106.8)
#B9B400 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) | #C4AC00 | 0.026 |
| Deuteranopia (no green cones) | #C7B21F | 0.025 |
| Tritanopia (no blue cones) | #C7A799 | 0.147 |
| Achromatopsia (no color) | #AFAFAF | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B9B400
#B9B400
oklch(75% 0.161 107.7)
- #AA9FFF
#AA9FFF
oklch(75% 0.136 287.9)
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 #B9B400, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Yellow #C2B709 ΔE 0.016
- Muddy Yellow #BFAC05 ΔE 0.022
- Mustard Green #A8B504 ΔE 0.024
- Mustard #CEB301 ΔE 0.032
- Pea #A4BF20 ΔE 0.037
- Bright Olive #9CBB04 ΔE 0.043
- Dark Yellow #D5B60A ΔE 0.044
- Mustard Yellow #D2BD0A ΔE 0.046
Use #B9B400 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.