#CFC640
Closest named color: Mustard Yellow (#D2BD0A). oklch(81% 0.15 105.5), rgb(207, 198, 64).
Aa
Black text reads best on this color (11.80:1).
About this color
#CFC640 is a light, vivid yellow. In OKLCH its lightness is 81%, its chroma 0.150 and its hue 105°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.026 away. Black text reads best on it, at 11.80:1.
| Hue family | Yellows |
| Lightness | light (81%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.80:1 |
| White text | 1.77:1 |
Values
| HEX | #CFC640 |
| RGB | rgb(207, 198, 64) |
| HSL | hsl(56, 60%, 53%) |
| OKLCH | oklch(81% 0.15 105.5) |
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 #CFC640 | 1.77:1 | Fails | Lc -36.7 | Non-text elements, placeholder text |
| Black text on #CFC640 | 11.80:1 | AAA | Lc 71.2 | Content text, not long reading |
| #CFC640 text on white | 1.77:1 | Fails | Lc 32.7 | Non-text elements, placeholder text |
| #CFC640 text on black | 11.80:1 | AAA | Lc -70.0 | 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
#F7F7E7
oklch(97.2% 0.021 106.8)
-
Step 100
100
#EDECCB
oklch(93.5% 0.043 105.8)
-
Step 200
200
#E0DD9C
oklch(88.5% 0.084 105.8)
-
Step 300
300 (this color)
#CFC640
oklch(81% 0.15 105.5)
-
Step 400
400
#AEA500
oklch(70.7% 0.151 105.7)
-
Step 500
500
#958D00
oklch(63% 0.134 105.6)
-
Step 600
600
#7E7600
oklch(55.5% 0.118 104.9)
-
Step 700
700
#696300
oklch(49% 0.104 105.5)
-
Step 800
800
#565100
oklch(42.6% 0.091 105.5)
-
Step 900
900
#484400
oklch(37.8% 0.081 105.9)
-
Step 950
950
#2B2800
oklch(27.1% 0.058 105.3)
#CFC640 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) | #D7BF2B | 0.019 |
| Deuteranopia (no green cones) | #DAC549 | 0.019 |
| Tritanopia (no blue cones) | #DEB9AB | 0.136 |
| Achromatopsia (no color) | #C2C2C2 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CFC640
#CFC640
oklch(81% 0.15 105.5)
- #BAB8FF
#BAB8FF
oklch(81% 0.1 285.2)
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 #CFC640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.026
- Dark Yellow #D5B60A ΔE 0.040
- Olive Yellow #C2B709 ΔE 0.047
- Mustard #CEB301 ΔE 0.048
- Greenish Beige #C9D179 ΔE 0.049
- Greenish Tan #BCCB7A ΔE 0.051
- Golden #F5BF03 ΔE 0.056
- Pale Olive Green #B1D27B ΔE 0.057
Use #CFC640 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.