#BFCC37
Closest named color: Mustard Yellow (#D2BD0A). oklch(80.9% 0.165 114.5), rgb(191, 204, 55).
Aa
Black text reads best on this color (11.90:1).
About this color
#BFCC37 is a light, vivid yellow. In OKLCH its lightness is 81%, its chroma 0.165 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.042 away. Black text reads best on it, at 11.90:1.
| Hue family | Yellows |
| Lightness | light (81%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.90:1 |
| White text | 1.76:1 |
Values
| HEX | #BFCC37 |
| RGB | rgb(191, 204, 55) |
| HSL | hsl(65, 59%, 51%) |
| OKLCH | oklch(80.9% 0.165 114.5) |
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 #BFCC37 | 1.76:1 | Fails | Lc -36.1 | Non-text elements, placeholder text |
| Black text on #BFCC37 | 11.90:1 | AAA | Lc 71.7 | Content text, not long reading |
| #BFCC37 text on white | 1.76:1 | Fails | Lc 32.2 | Non-text elements, placeholder text |
| #BFCC37 text on black | 11.90:1 | AAA | Lc -70.5 | Content text, not long reading |
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 300.
-
Step 50
50
#F5F7E7
oklch(97% 0.021 112.6)
-
Step 100
100
#E9EECA
oklch(93.6% 0.048 113.7)
-
Step 200
200
#D7E19A
oklch(88.5% 0.092 114.8)
-
Step 300
300 (this color)
#BFCC37
oklch(80.9% 0.165 114.5)
-
Step 400
400
#9FAB00
oklch(70.7% 0.16 114.7)
-
Step 500
500
#889200
oklch(63% 0.142 114.5)
-
Step 600
600
#727B00
oklch(55.6% 0.126 114.8)
-
Step 700
700
#606700
oklch(49.1% 0.111 114.3)
-
Step 800
800
#4E5400
oklch(42.6% 0.096 114.4)
-
Step 900
900
#414600
oklch(37.7% 0.085 114.3)
-
Step 950
950
#262900
oklch(26.9% 0.06 113.9)
#BFCC37 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) | #DBC218 | 0.043 |
| Deuteranopia (no green cones) | #DAC443 | 0.046 |
| Tritanopia (no blue cones) | #CCC0B0 | 0.146 |
| Achromatopsia (no color) | #C3C3C3 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BFCC37
#BFCC37
oklch(80.9% 0.165 114.5)
- #C5B3FF
#C5B3FF
oklch(80.9% 0.107 294.8)
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 #BFCC37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.042
- Yellow Green #9ACD32 ΔE 0.048
- Olive Yellow #C2B709 ΔE 0.052
- Pea #A4BF20 ΔE 0.054
- Pale Olive Green #B1D27B ΔE 0.055
- Slime Green #99CC04 ΔE 0.056
- Dark Yellow #D5B60A ΔE 0.059
- Greenish Beige #C9D179 ΔE 0.059
Use #BFCC37 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.