#E1BF00
Closest named color: Mustard Yellow (#D2BD0A). oklch(81% 0.167 96.1), rgb(225, 191, 0).
Aa
Black text reads best on this color (11.65:1).
About this color
#E1BF00 is a light, vivid yellow. In OKLCH its lightness is 81%, its chroma 0.167 and its hue 96°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Yellow (#D2BD0A), ΔE 0.024 away. Black text reads best on it, at 11.65:1.
| Hue family | Yellows |
| Lightness | light (81%) |
| Chroma | vivid (0.167) |
| Temperature | warm |
| Nearest name | Mustard Yellow (#D2BD0A) |
| Black text | 11.65:1 |
| White text | 1.80:1 |
Values
| HEX | #E1BF00 |
| RGB | rgb(225, 191, 0) |
| HSL | hsl(51, 100%, 44%) |
| OKLCH | oklch(81% 0.167 96.1) |
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 #E1BF00 | 1.80:1 | Fails | Lc -37.2 | Non-text elements, placeholder text |
| Black text on #E1BF00 | 11.65:1 | AAA | Lc 70.7 | Content text, not long reading |
| #E1BF00 text on white | 1.80:1 | Fails | Lc 33.2 | Non-text elements, placeholder text |
| #E1BF00 text on black | 11.65:1 | AAA | Lc -69.4 | 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
#FAF6E5
oklch(97.2% 0.023 96)
-
Step 100
100
#F3EAC6
oklch(93.5% 0.048 95.6)
-
Step 200
200
#EBDA92
oklch(88.6% 0.093 96.5)
-
Step 300
300 (this color)
#E1BF00
oklch(81% 0.167 96.1)
-
Step 400
400
#BC9F00
oklch(70.7% 0.145 95.9)
-
Step 500
500
#A18800
oklch(63.1% 0.13 96)
-
Step 600
600
#877200
oklch(55.5% 0.114 96.2)
-
Step 700
700
#726000
oklch(49.2% 0.101 96.3)
-
Step 800
800
#5D4E00
oklch(42.6% 0.088 96.3)
-
Step 900
900
#4E4100
oklch(37.8% 0.078 96.2)
-
Step 950
950
#2F2600
oklch(27.1% 0.056 95.5)
#E1BF00 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) | #D5BB00 | 0.022 |
| Deuteranopia (no green cones) | #DDC51F | 0.015 |
| Tritanopia (no blue cones) | #F4AEA2 | 0.153 |
| Achromatopsia (no color) | #C1C1C1 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E1BF00
#E1BF00
oklch(81% 0.167 96.1)
- #B0BCFF
#B0BCFF
oklch(81% 0.096 276.2)
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 #E1BF00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Yellow #D2BD0A ΔE 0.024
- Dark Yellow #D5B60A ΔE 0.031
- Golden #F5BF03 ΔE 0.031
- Golden Rod #F9BC08 ΔE 0.038
- Marigold #FCC006 ΔE 0.043
- Macaroni And Cheese #EFB435 ΔE 0.043
- Mustard #CEB301 ΔE 0.044
- Orangey Yellow #FDB915 ΔE 0.047
Use #E1BF00 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.